化学学报 ›› 1992, Vol. 50 ›› Issue (9): 924-929. 上一篇    下一篇

研究论文

环戊-2-烯酮的研究Ⅰ.环戊-2-烯酮与醛反应的区域选择及非对映立体选择性

CAMPBELL,M.M.;BROWN,D.W;张晓安   

  1. 伯斯大学化学系
  • 发布日期:1992-09-15

Studies son cyclopent-2-enone.I.the region- and diastereoselectivities of aldol reaction of cyclopent-2-enone and aldehydes

CAMPBELL,M.M.;BROWN,D.W;ZHANG XIAOAN   

  • Published:1992-09-15

本文系统研究了环戊-2-烯酮在碱性条件下与醛类的羟醛缩合反应,并通过结构及过渡状态的分析,解释了所得的这类反应的区域及非对映立体选择性.

关键词: 缩合反应, 立体选择性, 醛, 环戊烯酮, 区域选择性

The keto-enol tautomerism of dibenzoylmethane (I) in organized media, e.g. b-cyclodextrin and micelles (ionic and non-ionic), was monitored by UV absorption spectra. The introduction of b-cyclodextrin or the formation of micelle in the aqueous solution of I made the tautomerism equilibrium favor for enol type. The results indicated that the properties of tautomerism of I could be applied to characterize the microenvironmental property of organized media, reveal the structural characteristics of micelle, and determine the crit. micelle concentration of surfactant.

Key words: CONDENSATION REACTION, STEREOSELECTIVITY, ALDEHYDES, CYCLOPENTENONE, REGIOSELECTIVITY

中图分类号: