Lewis Acid-Promoted Rearrangement of 2,3-Epoxy Alcohol Derivatives: Stereochemical Control and Selective Formation of Two Types of Chiral Quaternary Carbon Centers from the Single Carbon Skeleton
作者:Yasuyuki Kita、Satoshi Matsuda、Ryoko Inoguchi、Jnaneshwara K. Ganesh、Hiromichi Fujioka
DOI:10.1021/jo0604080
日期:2006.7.1
3,3-tetrasubstituted 2,3-epoxy alcohols with several kinds of protecting groups was investigated. When SnCl4 is used as a Lewis acid, the reaction proceeds in a regio- and stereo-controlled manner to afford two types of carbonyl compounds selectively from a single 2,3-epoxy alcohol only by changing the protecting group of the alcohol. The method was then applied to the formation of two types of acyclic
研究了路易斯酸促进的带有2种保护基的2,2,3,3-四取代的2,3-环氧醇的重排。当将SnCl 4用作路易斯酸时,该反应以区域和立体受控的方式进行,仅通过改变醇的保护基,就可以从单一的2,3-环氧醇中选择性地提供两种类型的羰基化合物。然后将该方法应用于由单一化合物以光学活性形式形成两种类型的无环和环状季碳中心。