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Chin. J. Org. Chem. ›› 2000, Vol. 20 ›› Issue (1): 72-80. Previous Articles Next Articles
于建新;刘方明;鲁文杰;李燕萍;糟新民;刘育亭;刘丛
发布日期:
Yu Jianxin;Liu Fangming;Lu Wenjie;Li Yanping;Zao Xinmin;Liu Yuting;Liu Cong
Published:
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By the Vilsmeier-Haack reaction, chromone-3-carboxaldehydes (2a ~2e) swere prepared in high yields, whichreacted regiospecifically with substituted aroyl hydrazines (3a~3c) in EtOH containing AcOH at room temperature to give 3-(substituted aroly hydrazone)chromones (4a~4o). 4a~4o could be readily converted to substituted 3-(3-acetyl-5-aryl-1,3,4-oxadiazoline-2(-yl)-chromones (5a~5o) in good yields by refluxing with Ac2O. Their structures were established by elemental analysis, IR, ^1H NMR and MS spectra.
Key words: CHROMONE P, HYDRAZIDE P, ACETOPHENONE P, INFRARED SPECTROPHOTOMETRY, PROTON MAGNETIC RESONANCE SPECTROMETRY, MASS SPECTROGRAPHY
CLC Number:
O621
Yu Jianxin;Liu Fangming;Lu Wenjie;Li Yanping;Zao Xinmin;Liu Yuting;Liu Cong. Synthesis of some substituted 3-(3'-acetyl-5'-aryl-1',3',4'-oxadiazoline-2'-yl)-chromones[J]. Chin. J. Org. Chem., 2000, 20(1): 72-80.
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