Acta Chim. Sinica ›› 2016, Vol. 74 ›› Issue (10): 800-804.DOI: 10.6023/A16070358 Previous Articles     Next Articles

Article

多功能手性膦催化活泼烯烃的不对称分子间Rauhut-Currier反应

周伟a, 高利华b, 陶梦娜a, 宿晓a, 赵庆杰c, 张俊良a   

  1. a 华东师范大学化学与分子工程学院 上海市绿色化学与化工过程绿色化重点实验室 上海 200062;
    b 吉林省东丰兽药厂 吉林 132011;
    c 第二军医大学药学院化学系 上海 200433
  • 收稿日期:2016-07-23 出版日期:2016-10-15 发布日期:2016-09-06
  • 通讯作者: 张俊良,E-mail:jlzhang@chem.ecnu.edu.cn;赵庆杰,E-mail:qjzhao@smmu.edu.cn E-mail:jlzhang@chem.ecnu.edu.cn;qjzhao@smmu.edu.cn
  • 基金资助:

    项目受973计划(No.2015CB856600)、国家自然科学基金(Nos.21372084,21425205)和长江学者与创新团队发展计划(PCSIRT)资助.

Highly Enantioselective Intermolecular Rauhut–Currier Reaction of Activated Alkenes Catalyzed by Multifunctional Chiral Phosphine

Zhou Weia, Gao Lihuab, Tao Mengnaa, Su Xiaoa, Zhao Qingjiec, Zhang Junlianga   

  1. a Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062;
    b Jilin Dongfeng Veterinary Pharmacy Factory, Jilin 132011;
    c Department of Organic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433
  • Received:2016-07-23 Online:2016-10-15 Published:2016-09-06
  • Supported by:

    Project supported by the "973" Programs (No. 2015CB856600), the National Natural Science Foundation of China (Nos. 21372084, 21425205), and the Changjiang Scholars and Innovative Research Team in University (PCSIRT).

The Rauhut-Currier (R-C) reaction, first disclosed by Rauhut and Currier in 1963, is an atom economy strategy for the construction of carbon-carbon bond and a wide range of synthetic valuable building blocks. During the past few decades, significant progress on the enantioselective intramolecular R-C reactions has been achieved by utilizing diverse chiral nucleophilic catalysts such as cysteine derivatives, L-prolinol, hydrogen-bonding catalyst and β-aminephosphine. However, compared to the well-developed enantioselective intramolecular R-C reactions, the enantioselective cross intermolecular R-C reaction concerning two different alkenes has been rarely explored so far. The enantioselective cross R-C reaction still suffers from a series of drawbacks such as low reactivity, enantioselectivity, limited substrate scope and higher catalyst loading. Thus, the development of novel chiral nucleophilic catalyst, for highly enantioselective cross R-C reaction is highly desirable. In this article, we wish to report the application of Xiao-Phos in the highly enantioselective cross intermolecular R-C reaction of vinyl ketone and activated alkenes. Accordingly, a stirred solution of 3-aroyl acrylates 1 (0.2 mmol) and (S,RS)-X8 (0.02 mmol) in toluene (2 mL) was cooled to -20℃. Subsequently, vinyl ketone 2 (0.4 mmol for aryl vinyl ketone and 0.6 mmol for alkyl vinyl ketone) was added in one portion through a syringe. The mixture was stirred at this temperature until completion of 3-aroyl acrylate as indicated by TLC. After completion of the reaction, the reaction mixture was directly purified by silica gel chromatography to afford the desired RC product. What’s more, control experiments demonstrated that the presence of free sulfinamide N-H in Xiao-Phos is crucial for the enantioselective cross R-C reaction. Finally, for more details about (S,RS)-X8 in the enantioselective cross R-C reaction, control experiments monitored by 31P NMR spectroscopy were conducted and the 31P NMR experiments indicated that this cross intermolecular R-C reaction was initiated by the Michael addition of (S,RS)-X8 to vinyl ketone 2.

Key words: chiral phosphine catalysis, Rauhut-Currier reaction, 3-aroyl acrylates, vinyl ketones, nucleophilic catalysis