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Archive By Volume
Chinese Journal of Organic Chemistry 1999 Vol.19
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Original Articles
Applications of tungsten carbene complexes in organic synthesis
Tang Wenming;Chen Zhao;Fang Yi
Chin. J. Org. Chem. 1999, 19 (1): 5-14.
Published: 25 February 1999
Abstract
(
1809
)
Knowledge map
The reaction mechanism involving tungsten carbene complex and the synthesis methods of several complexes are briefly reviewed. The reactions of synthesizing organic compounds with the tungsten carbene complexes are summarized.
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Cited: Baidu(
8
) CSCD(
1
)
Original Articles
Per(poly)fluorodiacyl peroxides-chemistry and application
Zhao Chengxue;Qu Yanling;He Haiying;Zhou Zhibin
Chin. J. Org. Chem. 1999, 19 (1): 15-26.
Published: 25 February 1999
Abstract
(
1941
)
Knowledge map
The synthesis of per(poly)fluorodiacyl peroxides, the kinetic studies and product analysis of their thermal decomposition, the mechanistic investigation of their electron-transfer reactions with electron-rich aromatics and nitrogen-containing substrates as well as their application as effective aromatic ring-per(poly)fluoro- alkylating agents and initiators of oligomerization of vinyl monomes are reviewed in this paper.
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Original Articles
Enzyme mimics of ATPase
Wang Fuke;Sui Guodong;Zhang Daodao
Chin. J. Org. Chem. 1999, 19 (1): 27-33.
Published: 25 February 1999
Abstract
(
2058
)
Knowledge map
This paper reviews the enzyme mimics of ATPase (ATP synthase) by model compounds, especially by polyammonium compounds.
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Original Articles
The research on the desilylation and esterification of the trimethylsilyl cyclopropyl ethers
Sun Haizhou;Li Jisen
Chin. J. Org. Chem. 1999, 19 (1): 34-39.
Published: 25 February 1999
Abstract
(
2370
)
Knowledge map
Trimethylsilyl cyclopropyl ethers can react with the silica gel to form the cyclopropanols when Lewis acid such as ZnX~2 existed. Then the esterification reaction between trimethylsilyl cyclopropyl ethers and acid chloride in the presence of ZnCl~2 were investigated, and better yields were obtained in less electron-donating solvent CH~2Cl~2 than in Et~2O. Moreover, we adopted an one-pot route combining the cyclopropanation and esterification of enoxysilane to prepare the cyclopropyl esters in moderate to good yields.
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Cited: Baidu(
5
)
Original Articles
Synthesis and spectroscopy study of α-phenylcinamic acids
He Xin;Mu Liyuan;Zhu Liya;Lin Ziyun;Liang Xiaotian
Chin. J. Org. Chem. 1999, 19 (1): 40-45.
Published: 25 February 1999
Abstract
(
2287
)
Knowledge map
Fourteen substituted α-phenylcinnamic acids were prepared by classical Perkin condensation reaction. The configuration of α- phenylcinnamic acids was determined by the NOE difference spectra. A plausible way of cleavage was involved in the formation of the specific fragment peaks in the MS of the α-phenylcinnamic acids. The characteristic chemical shift of the olefinic proton in ^1H NMR is also discussed.
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Cited: Baidu(
1
) CSCD(
1
)
Original Articles
Annonaceous acetogenins from roots of Annona atemoya Hort
Wu Ping;Chen Wensen;Yu Qian;Wu Yulin
Chin. J. Org. Chem. 1999, 19 (1): 46-52.
Published: 25 February 1999
Abstract
(
2086
)
Knowledge map
Atemoyacin C(1), a novel C-35 tetrahydroxy adjacent bis- tetrahydrofuranyl annonaceous acetogenin was isolated rom the alcoholic extracts of the roots of Annona atemoya Hort. Its structure was elucidated based on spectroscopic methods. In addition, five known acetogenins, isocherimolin-1(2), bullatacin(3), rollinicin(4), almunequin(5) and atemoyacin B(6) were also isolated from the same plant.
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Cited: CSCD(
2
)
Original Articles
Reaction of anhydrous CeCl~3 reduced by lithium naphthalide with carbonyl compounds and halohydrocarbon
Yang Jinfei;Bao Jianchun;Xiao Yaping;Bei Meizhi
Chin. J. Org. Chem. 1999, 19 (1): 53-58.
Published: 25 February 1999
Abstract
(
2618
)
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The active cerium metal (Ce^*) prepared by the reduction of anhydrous CeCl~3 with LiNp (Lithium Naphthalide) shows higher reactivity in its action with carbonyl compounds than Nd^* obtained by the same reduction method. The reaction of Ce^* with carbonyl compounds, followed by hydrolysis, produces the corresponding alcohols, pinacols and alkenes depending not only on the reaction time and temperature but also on the nature of the carbonyl compounds and the molar ratio of the Ce^*:RCOR'. Interestingly, the effect of the different molar ratio of CeCl~3:LiNp also shows different reactivity and selectivity oof low valent Ce species. In addition, the reaction of ketones with halohydrocarbon promoted by active cerium metal was also studied.
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Original Articles
Synthesis of chiral nonracemic vicinal diols via nucleophilic ring- opening of (R)-(+)-glycidol
Zhang Shengyong;Dai Shourong;Sun Xiaoli;Wang Jianhua
Chin. J. Org. Chem. 1999, 19 (1): 59-62.
Published: 25 February 1999
Abstract
(
2268
)
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(R)-(+)-Glycidol 1 was synthesized from D-mannitol. Nucleophilic ring-opening of this epoxide gave a convenient method for generation a variety of chiral nonracemic vicinal diols in high stereoselectivity (93%-96% e.e.).
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Cited: Baidu(
9
)
Original Articles
Reaction of N-arylmethylene-1-propen-1-amines with sodium alkoxide
Chen Lin;Yao Zipeng
Chin. J. Org. Chem. 1999, 19 (1): 63-67.
Published: 25 February 1999
Abstract
(
2401
)
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The reaction between N-arylmethylene-1-propen-1-amine (2) and sodium alkoxide (NaOMe, NaOEt) was studied. The reaction formed regioselectively imines (3). A plausible mechanism was proposed.
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Cited: CSCD(
1
)
Original Articles
Investigation of plant systemic organoselena compounds(II): The Mannich reaction of selenamorpholine
Wu Jun;Li Weiping;Liu Xiufang;Xu Hansheng
Chin. J. Org. Chem. 1999, 19 (1): 68-71.
Published: 25 February 1999
Abstract
(
1935
)
Knowledge map
This paper described the Mannich reaction of selenamorpholine, which reacted with aldehydes and acidic components gave seven Mannich bases.
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Original Articles
Selective hydroboration of alkene with sodium malonyloxyborohydride
Peng Weili;Huang Shiwen;Shan Zixing;Zhao Dejie
Chin. J. Org. Chem. 1999, 19 (1): 72-76.
Published: 25 February 1999
Abstract
(
2325
)
Knowledge map
The preparation of sodium malonyloxyborohydride in situ and its selective hydroborating alkene are described. It is confirmed by chemical reaction that the hydroboration of aliphatic terminal alkenes such as 1-heptene with sodium malonyloxyborohydride in THF involves the addition of 98% of boron atom moitey to the terminal position on the double bond and 2% at the 2-position to yield monosubstituted organoboron compounds, i.e. sodium malonyloxyborohydride is a monofunctional hydroborating reagent.
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Cited: CSCD(
2
)
Original Articles
The quantified effecting of alcohol solvent on the carbonyl (C=O) ultraviolet absorption
Wen Bin;Cao Chenzhong
Chin. J. Org. Chem. 1999, 19 (1): 77-80.
Published: 25 February 1999
Abstract
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2532
)
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Using a series of alcohols as solvents, the ultraviolet absorption energy (ΔE) values of carbonyl (C=O) for acetone and cyclohexanone were determined. The relations between those ΔE values and the molecular structure of solvent alcohols were discussed. The obtained results showed that there is a good linear relation between the ΔE value and the alkyl polarizability effect index PEI value of alcohol molecule, that is ΔE=a+bPEI.
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Cited: CSCD(
1
)
Original Articles
Synthesis of bis(hydroxymethyl)-18-crown-6 and its derivatives
Guo Yanling;Qi Jingshao;Suo Kuiqian
Chin. J. Org. Chem. 1999, 19 (1): 81-84.
Published: 25 February 1999
Abstract
(
2138
)
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In this paper, bis(hydroxymethyl)-18-crown-6 and seven derivatives were synthesized and characterized by elemental analyses, MS, IR and ^1H NMR spectroscopy.
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Original Articles
Studies on synthesis of calixarene 3:
Lu Guoyuan;He Weijiang;Wu Lin;Hu Hongwen
Chin. J. Org. Chem. 1999, 19 (1): 85-88.
Published: 25 February 1999
Abstract
(
1990
)
Knowledge map
Four tetraallkylethers 3a-3d (alkyl: n-C~4H~9、 n-C~7H~1~7、n- C~1~2H~2~5、n-C~1~6H~3~3 of calix[4] arene and their corresponding p- tetraacetyl derivatives 4a-4d were prepared by the etheration with NaH as base in DMF and acetylation on phenyl. ^1H NMR indicated that all new calix[4] arene derivatives have cone conformation.
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Original Articles
The synthesis of chiral titanium chelates from tosyl-L-amino-acids
Yang Nianfa;Wu Xiongyu;Lin Yongcheng;Zeng Longmei;Chen Rongli
Chin. J. Org. Chem. 1999, 19 (1): 89-92.
Published: 25 February 1999
Abstract
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2671
)
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Chiral titanium chelates were prepared from tosyl-L-phenylalanine, tosyl-L-valine, tosyl-L-leucine, tosyl-L-iso-leucine and tosyl-L- proline. Their structures were determined to be chiral titanium chelates 2a, 2b, 2c, 2d and 4 by NMR, IR and elemental analysis. The physical constants of the chiral titanium chelates were reported.
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Cited: Baidu(
3
) CSCD(
4
)
Original Articles
Asymmetric synthesis of (2S)-2-brom-1-(6'-methoxy-2'-naphthyl)propan- 1-one
Hu Aixi;Fan Guozhi;Zhao Haitao
Chin. J. Org. Chem. 1999, 19 (1): 93-96.
Published: 25 February 1999
Abstract
(
1953
)
Knowledge map
(2S)-2-Brom-1-(6'-methoxy-2'-naphthyl)propan-1-one was systhsized by acetalization, asymmetric bromination, hydrolysis of 6-methoxy-2- propionyl naphthalene using (2R, 3R)-dimethyl tartrate as chiral auxiary, cupricbromide as the brominating agent with 94% total yield.
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Original Articles
A new progress of application of electrospary ionization mass spectrometry in chemistry
Wei Xianwen;Xu Zheng
Chin. J. Org. Chem. 1999, 19 (1): 97-103.
Published: 25 February 1999
Abstract
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2401
)
Knowledge map
Electrospray ionization mass spectrometry (ESI-MS) is a very important mass spectrometry method developed in 20th century, with the characteristics of no fragmentation. The ESI-MS spectrometry has proven to be an extremely powerful technique for the analysis of involatile, polar and thermally labile compounds which exist as ions (positive and negative) in solution. This article reviewed the progress of application of ESI-MS to fullerene chemistry, inorganic complexes, clusters, organic reactions, organometallic compounds and supermolecular chemistry.
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Cited: CSCD(
13
)
Original Articles
Conformational effect in some organic reactions
Nie Xiaoping;Ye Xiulin
Chin. J. Org. Chem. 1999, 19 (2): 109-120.
Published: 25 April 1999
Abstract
(
2201
)
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In this paper, the impact of conformational effect (including stereoelectronic effect and steric effect) on the stereoselectivity in some organic reactions were discussed by estimating the energy difference between the intermediates of the competing reaction routes. Stereoelectronic effect and steric effect played a more or less important roles respectively in affecting the stereochemistry of the reactions because of different reaction mechanisms, conformational structures of the reactants and the reaction conditions. Revealing such relationship would be helpful in correctly predicting the structure of the products and selecting a more practicable synthetic route.
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Original Articles
Synthesis of sugar ester catalyzed by enzymes
Li Zuyi;Liu Junjie
Chin. J. Org. Chem. 1999, 19 (2): 121-126.
Published: 25 April 1999
Abstract
(
1759
)
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This article summarizes the recent development in the sugar ester's synthesis catalyzed by enzymes, including in organic solvents and solvent-free condition.
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Cited: Baidu(
28
) CSCD(
7
)
Original Articles
Development in the application of KF-Al~2O~3 reagent to organic synthesis reactions
Yu Shenyi;Chen Fuheng
Chin. J. Org. Chem. 1999, 19 (2): 127-134.
Published: 25 April 1999
Abstract
(
2001
)
Knowledge map
This paper reviews the development in the application of KF-Al~2O~3 reagent to organic synthesis reactions since its strong catalytic action has been found by Yamawaki and Ando in 1979.
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Original Articles
The quantitative structure-enantioselective retention relationships and the application in the chiral recognition mechanism in the chromatography
Gao Ruyu;Wang Hefang
Chin. J. Org. Chem. 1999, 19 (2): 135-140.
Published: 25 April 1999
Abstract
(
1823
)
Knowledge map
The quantitative structure-enantioselective retention relationships methods are described. A review of the application of these methods in the chiral recognition mechanism in the chromatography is given.
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Cited: CSCD(
5
)
Original Articles
Study on polymer-supported bromate ion oxidizer
Yang Guichun;Chen Zuxing;Huang Jinxia;Chen Jiawei;Shi Congyun
Chin. J. Org. Chem. 1999, 19 (2): 141-146.
Published: 25 April 1999
Abstract
(
1921
)
Knowledge map
Polymer-supported bromate ion oxidizer was prepared from strong basic ion-exchange resin with sodium bromate. In the presence of 40% HBr or AlCl~3 or NaHSO~3, the primary alcohols and simple ethers were readily oxidized to esters; secondary alcohols to ketones; α, ω- diols and cyclic thers to lactones; thoils and selenols to the corresponding disulfides and diselenides with good to excellient yields respectively, by the polymer-supported bromate ion oxidizer.
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Cited: Baidu(
6
) CSCD(
3
)
Original Articles
Studies on syntheses and spectral character of bis[N, N'-alkylene-2, 2'-(arylmethylene) bis(3, 4-dimethylpyrrole-5-aldimino)] dimanganese (II)
Chen Xinbin;Gui Mingde;Zhu Shenjie;Zhang Ruohua
Chin. J. Org. Chem. 1999, 19 (2): 147-152.
Published: 25 April 1999
Abstract
(
1905
)
Knowledge map
This paper firstly reports the syntheses and spectral characters of 7 ligands of Bis[N, N'-alkylene-2, 2'-(arylmethylene) bis (3, 4- dimethylpyrrole-5-aldimino)] and their dimanganese(II) complexes.
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Original Articles
Study of new remedy for diabetes sympatomatology Epalrestat's light sensitive isomerization
Tu Huiping;Jiang Yongwen;Wang Juan;Hua Zhengmao;Yang Liping
Chin. J. Org. Chem. 1999, 19 (2): 153-156.
Published: 25 April 1999
Abstract
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2687
)
Knowledge map
Epalrestat is a new remedy for diabetes sympatomaology. It can relieve diabetic retinopathy, dibetic motor never conduction inhabition. We synthesized it by rhodanine-3-actic acid and α-methyl- cinnamaldehyde. We researched Epalrestat's configurations and its preserved cinditions with HPLC, X-ray diffraction and high resolving NMR. We discovered, in Epalrestat's four stereo configurations, that (Z, E) is the most stable one (96.5%). But it is easy to transfer to (Z, Z) configuration in the sun light. (Z, E) configuration still has 93.5% in the mixture in dark after one year.
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Original Articles
Synthesis of 3-substituted aminomethyl-5-v-triazol-4-yl-1, 3, 4- oxadiazole-2-thione
Yu Jianxin;Lu Wenjie;Liu Gang;Liu Yuting;Liu Fangming;Chen Yaozu
Chin. J. Org. Chem. 1999, 19 (2): 157-161.
Published: 25 April 1999
Abstract
(
2038
)
Knowledge map
In the presence of CS~2/KOH, 2-phenyl-1, 2, 3-triazole-4-formyl hydrazine(1) cyclizes to give 5-(2-phenyl-1, 2, 3-triazol-4-yl)-1, 3, 4-oxadiazole-2-thione(2) which in turn is converted to 3-substituted aminomethyl-5-(2-phenyl-1, 2, 3-triazol-4-yl)-1, 3, 4-oxadiazole-2- thiones(3) under Mannich conditions.
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Original Articles
The synthesis of indozoles from substituted hydranones of 2, 6- dialkoxyl(hydroxyl) acetophenones
Qiu Guofu;Qiu Yuzhu;Zhang Zheng;Hu Hongwen
Chin. J. Org. Chem. 1999, 19 (2): 162-165.
Published: 25 April 1999
Abstract
(
2076
)
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In the presence of PPA, 2, 6-dialkoxyl (hydroxyl) acetophenone hydrazones were cyclized to give indazoles. According to the experimental resutls, it was assumed that the cyclization was taken by nucleophilic attack. All the new compound were identified by elemental and spectral analyses.
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Original Articles
Study of photodegradation of benzyl phenylacetate catalyzed by titanium dioxide
Cui Zhenfeng;Wang Yongzhi;Liu Chunyang
Chin. J. Org. Chem. 1999, 19 (2): 166-170.
Published: 25 April 1999
Abstract
(
2076
)
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Direct photolysis of benzyl acetate in MeCN and photodegradations of benzyl phenyl acetate in TiO~2 suspension in water, water- acetonitrile or acetonitrile are investigated. Effect of various reaction conditions on photodegradations and the reaction mechanisms are discussed.
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Cited: Baidu(
2
)
Original Articles
Syntheses of bis(1, 4, 7-triazacyclononanylmethyl) benzene or pyridine ligands
Wang Hongjun;Wu Chengtai
Chin. J. Org. Chem. 1999, 19 (2): 171-175.
Published: 25 April 1999
Abstract
(
2179
)
Knowledge map
The reaction of 1, 4-bis(p-toluenesulfonyl)-1, 4, 7- triazacyclononance with the bis (bromomethyl) compounds 4a-4c in CH~3CN/K~2CO~3 afforded the N-p-toluenesulfonyl substituted bis (1, 4, 7-triazacyclononanylmethyl) compounds 5a-5c. Treatment of compounds 5a-5c with conc. H~2SO~4 followed by conc. HCl gave the hydrochloride of 6a-6c. Compounds 5a-5c and 6a-6c were identified by elemental analysis and spectral analysis (IR、^1H NMR、^1^3C NMR、MS).
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Original Articles
Synthesis and characterization of some N-aryl-(1'- carboxymethylferrocenyl)-acetamides
Bian Zhanxi;Fan Ruilan;Li Fengze
Chin. J. Org. Chem. 1999, 19 (2): 176-180.
Published: 25 April 1999
Abstract
(
2091
)
Knowledge map
14 N-aryl-(1'-carboxymethylferrocenyl)-acetamides have been synthesized by reaction of 1, 1'-ferrocenediacetic acid anhydride with aromatic amines. The reactivities of the aromatic amines in the reaction have been studied. And the structures of the products were characterized by elementary analysis, IR and ^1H NMR. The reaction of N-2-hydroxy (phenyl)-(1'-carboxymethylferrocenyl)-acetamide with CuCl~2.2H~2O was also tentatively studied. The composition of the corresponding cupper complex (LCuCl~2.2H~2O) was confirmed by elementary analysis.
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Cited: CSCD(
1
)
Original Articles
The modification of lactonic sophoroselipid by lipases
Shi Yiping;Li Jiangyun;Li Zuyi
Chin. J. Org. Chem. 1999, 19 (2): 181-183.
Published: 25 April 1999
Abstract
(
2067
)
Knowledge map
The lactonic sophoroselipid is a kind of biosurfactant. It was modified by lipases. Lactonic sophoroselipid was hydrolysized selectively by lipase to eliminate one acetate group of the sugar and the open ring derivative of sophoroselipid was not obtained in our experiment.
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Original Articles
Synthesis of methyl 5-hexenates by homologation of 4-pentenals
Chen Ligong;Li Yang;MENG ;Li Yuan;Lu Meng;Luo Huibing;Wang Yong
Chin. J. Org. Chem. 1999, 19 (2): 184-189.
Published: 25 April 1999
Abstract
(
2181
)
Knowledge map
Methyl 5, 9, 13-trimethylbutadeca-5, 9, 13-trienoate (3) and methyl 5-hexenates (7-9) were synthesized by homologation of 4, 8, 12- trimethyl-4, 8, 12-tridecatrienal (1) and 4-pentenals. Thus, treatment of 4-pentenals with methoxy methylenetriphenylphosphin afforded a mixture of cis- and trans- enol ethers, which were oxidized by PCC to give methyl 5-hexenates.
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Original Articles
Synthesis and biological activity of acetamides containing pyridazinones
Luo Tiejun;Ou Xiaoming;Luo Zhenli
Chin. J. Org. Chem. 1999, 19 (2): 190-194.
Published: 25 April 1999
Abstract
(
1979
)
Knowledge map
2-tert-Butyl-5-[(N-alkyl or N, N-dialkyl acetamide) epoxy]-4- chloropyridazine-3(2H)-one (1a-1l) were synthesized from the corresponding N-alkyl or N, N-dialkyl-2-chloroacetamide (4a-4l) with 2-tert-butyl-5-hydroxy-4-chloro-pyridazine-3(2H)-one(3). The preliminary biological tests indicate that some compounds of (1a-1l) show an insecticidal activity.
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Cited: CSCD(
2
)
Original Articles
Studies on synthesis of 6-aryl-3-(3-nitrophenyl/4-nitro-phenyl)-1, 2, 4-triazolo[3, 4-b]-1, 3, 4-thiadiazole derivatives
Shi Haijian;Shi Haoxin;Wang Zhongyi
Chin. J. Org. Chem. 1999, 19 (2): 195-199.
Published: 25 April 1999
Abstract
(
1935
)
Knowledge map
Sixteen title compounds have been prepared by the reaction of 4- amino-5-mercapto-3-(3-nitrophenyl/4-nitrophenyl)-1, 2, 4-triazoles with aryl carboxylic acids in the presence of phosphorus oxychloride. The synthetic reaction conditions has been investigated. All the compounds were screened for antimicrobial activity against bacteria Staphylococcus aureus and Escherichia coli. some compounds appeared very strong antibacterial activity.
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Original Articles
One-pot preparation of 4, 5-disubstituted-1, 2-benzoquinones
Zhang Xiaochun;Huang Zhishu;Wei Haifeng;Wang Zhicai;Ma Lin;Gu Lianquan
Chin. J. Org. Chem. 1999, 19 (2): 200-203.
Published: 25 April 1999
Abstract
(
2739
)
Knowledge map
In the presence of the immobilized polyphenol oxidase, a one-pot preparation of 4, 5-disubstituted-1, 2-benzoquinones, such as 4, 5-di- aniline-1, 2-benzoquinone, 4, 5-di-(p-methyl aniline)-1, 2- benzoquinone, 4, 5-di-(m-chloroaniline)-1, 2-benzoquinone and 4, 5-di- (p-bromoaniline)-1, 2-benzoquinone, was achieved successfully by using the oxidation-Michael addition. The same results were obtained using I~2-KI instead of the immobilized polyphenol oxidase. The proposed oxidation (Michael addition mechanism has been demonstrated by UV-Vis spectroscopy.
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Cited: CSCD(
5
)
Original Articles
The advances in the synthesis of multiple disulfide bond-containing peptides
Jiang Hui;Zhong Mingnai;Chen Jisheng;Miao Zhenwei
Chin. J. Org. Chem. 1999, 19 (3): 214-223.
Published: 25 June 1999
Abstract
(
2413
)
Knowledge map
A review with 47 references on the strategy of disulfide bond formation in peptide synthesis and the methods for analyzing disulfide linkage patterns in peptides is presented.
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Cited: Baidu(
2
) CSCD(
1
)
Original Articles
A review of the mechanism of ozonide formation
Sha Yaowu;Wang Xin
Chin. J. Org. Chem. 1999, 19 (3): 224-235.
Published: 25 June 1999
Abstract
(
3198
)
Knowledge map
The mechanism of ozonide formation has been being focused on the study of ozonization of alkenes. Criegee's three-step mechanism has been widely accepted. The firsst step is the formation of a primary ozonide. In most cases, it is a concerted cycloaddition of alkene to ozone. The second step is fragmentation of the primary ozonide into a carbonyl oxide and a carbonyl compound. Carbonyl oxide is the core of Criegee's mechanism. The ratio of carbonyl oxide to carbonyl compound depends on the structure of the alkene. The third step is recombination of the carbonyl compound with carbonyl oxide. Besides newly-formed carbonyl compound, other already existed carbonyl group can also react with carbonyl oxide. Carbonyl oxide can also react with compounds bearing active proton, such as water, alcohols, organic acids and amines. Literature of the Criegee's mechanism is reviewed. Reaction process, selectivity and stereochemistry of each step are discussed on the basis of the related literature.
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Cited: Baidu(
10
) CSCD(
8
)
Original Articles
Preparation of methanofullerenes and related reaction mechanism
Guo Zhixin;Li Yuliang;Zhu Daoben;Zheng Dagui;Li Changwu
Chin. J. Org. Chem. 1999, 19 (3): 236-241.
Published: 25 June 1999
Abstract
(
2065
)
Knowledge map
Five methods for the preparation of methanofullerenes are reviewed, and the mechanisms of the reactions are discussed in detail.
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Cited: Baidu(
2
)
Original Articles
The properties and application of cross-linked enzyme crystals in organic synthesis
Li Zuyi;Zhu Wei
Chin. J. Org. Chem. 1999, 19 (3): 242-248.
Published: 25 June 1999
Abstract
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2181
)
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Cross-Linked Enzyme Crystals (CLEC) offer a combination of the features normally associated with either enzymes (high activity and selectivity, ability to function under mild reaction conditions, ease of disposal) or heterogeneous catalysts (stability in different environments, recycling). CLEC has the excellent stability, activity, mechanical strength. CLEC catalysts are extremely useful in organic synthesis, especially in the resolution of chiral compounds, peptides synthesis, and the formation of C-C bonds.
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Cited: CSCD(
5
)
Original Articles
Synthesis of naphthalocyaninatocobalt compounds
Wang Xiaobing;Tang Daihua;Wang Fengqi;Zhen Zhen;Zhang Jiancheng;Liu Xinhou
Chin. J. Org. Chem. 1999, 19 (3): 249-254.
Published: 25 June 1999
Abstract
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1864
)
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2, 3-Naphthalocyaninatocobalt compounds, a new type of functional materials, have been successfully prepared by using of Diels-Alder reaction. The mechanism of the synthetic reactions and the factors which have influence on reaction are discussed. Despite their insolubility in many organic solvents, they are found to be soluble in nitrogen-containing solvents, such as DMF and pyridine.
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Cited: CSCD(
2
)
Original Articles
Synthesis and crystal structure of 3-aryl-3-cyclohexeneyl propanoic ester derivatives
Tu Shujiang;Shi Daqing;Lu Zaisheng;Wang Suhui;Wei Qihua;Dai Guiyuan
Chin. J. Org. Chem. 1999, 19 (3): 255-261.
Published: 25 June 1999
Abstract
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1897
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A series of 3-aryl-3-(5, 5-dimethyl-3-hydroxy-2-cyclohexene-1-one-2- yl) propanoic esters were synthesized by reaction between aromatic aldehydes, 5, 5-dimethyl-1, 3-cyclohexanedione and isopropylidene malonate catalyzed by KF-Al~2O~3 in alcohols. The structure of 4a was determined by X-ray analysis. A possible mechanism for this reaction is postulated.
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《Chinese Journal of Organic Chemistry》
(Note: draft number + name)