Diastereoselectivity in the Preparation of 4-Phenylthio-4-butanolide Derivatives by the Use of the Pummerer Rearrangement
作者:Huiwen Su、Yuichi Hiwatari、Masanobu Soenosawa、Kenji Sasuga、Kozo Shirai、Takanobu Kumamoto
DOI:10.1246/bcsj.66.2603
日期:1993.9
Diastereoselectivity in the preparation of 4-phenylthio-4-butanolide derivatives by the Pummerer rearrangement of 4-phenylsulfinylbutanoic acid derivatives was clarified. The reaction of 3-alkyl-4-phenylsulfinylbutanoic acid with acetic anhydride resulted in the predominant formation of trans-3-alkyl-4-phenylthio-4-butanolide. Lactonization of 2,3-dialkyl-4-phenylsulfinylbutanoic acid gave (2RS,3RS
阐明了通过 4-苯基亚磺酰基丁酸衍生物的普默勒重排制备 4-苯硫基-4-丁内酯衍生物的非对映选择性。3-烷基-4-苯基亚磺酰基丁酸与乙酸酐的反应导致主要形成反式-3-烷基-4-苯硫基-4-丁内酯。2,3-二烷基-4-苯基亚磺酰基丁酸的内酯化主要得到(2RS,3RS,4SR)-2,3-二烷基-4-苯硫基-4-丁内酯。