Sodium Bicarbonate-Catalyzed Stereoselective Isomerizations of Electron-Deficient Propargylic Alcohols to (<i>Z</i>)-Enones
作者:John P. Sonye、Kazunori Koide
DOI:10.1021/jo0623944
日期:2007.3.1
Redox isomerization is a synthetically important process because it creates two new functional groups in the product, among which is the isomerization of propargylic alcohols to conjugated enones. Although E-enones have been prepared by this approach, Z-enones could not be accessed. We previously reported DABCO-catalyzed E-selective isomerization of electron-deficient propargylic alcohols to enones
氧化还原异构化是合成上重要的过程,因为它在产物中产生了两个新的官能团,其中是炔丙醇异构化成共轭烯酮。尽管已通过这种方法制备了E-烯酮,但无法访问Z-烯酮。我们先前报道了DABCO催化的电子不足的炔丙醇向烯的E选择性异构化及其机理。基于这种机理,我们现在已经开发了碳酸氢钠作为催化剂,将缺电子的炔丙醇进行Z选择性氧化还原异构化为烯酮。