Acta Chimica Sinica ›› 1992, Vol. 50 ›› Issue (9): 924-929. Previous Articles     Next Articles

Original Articles

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

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

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