化学学报 ›› 2005, Vol. 63 ›› Issue (8): 677-680. 上一篇    下一篇

研究论文

S-脯氨酸催化丙酮与2,2-二甲基丙醛不对称直接羟醛缩合反应过渡态的理论研究

樊建芬*,吴丽芬   

  1. (苏州大学化学化工学院 江苏省有机合成重点实验室 苏州 215006)
  • 投稿日期:2004-09-14 修回日期:2004-12-28 发布日期:2010-12-10
  • 通讯作者: 樊建芬

Transition State Study on the S-Proline-catalyzed Direct Aldol Reaction between Acetone and 2,2-Dimethyl-propionaldehyde

FAN Jian-Fen*, WU Li-Fen   

  1. (Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006)
  • Received:2004-09-14 Revised:2004-12-28 Published:2010-12-10
  • Contact: FAN Jian-Fen

采用从头计算和密度泛函方法研究了S-脯氨酸催化丙酮和2,2-二甲基丙醛的不对称Aldol反应的立体控制步骤, 同时考虑了DMSO溶剂效应, 计算得到了四个立体异构过渡态的优化构型及其相对能量, 解释了该不对称反应的立体选择性.

关键词: B3LYP, HF, 不对称催化直接羟醛缩合反应, S-脯氨酸, 丙酮, 2,2-二甲基丙醛, 溶剂效应

HF and DFT calculations were employed to study the four stereoisomeric transition states in the stereo-controlling step of the direct aldol reaction between acetone and 2,2-dimethyl-propionaldehyde catalyzed by S-proline. The solvent effect of DMSO was involved. The calculation results revealed the enantioselectivity of the reaction.

Key words: B3LYP, HF, asymmetric catalytic direct aldol reaction, S-proline, acetone, 2,2-dimethyl-propionaldehyde, solvent