Improved and Environmentally Friendly Large-Scale Preparation of Cyclohexadienyl-, Cycloheptadienyl Sulfone and Enantiopure Epoxy Cycloheptyl Sulfones
作者:Philip Fuchs、Taesik Park、Eduardo Torres
DOI:10.1055/s-2004-822318
日期:——
Kilogram-scale amounts of cycloheptadienyl phenylsulfone and cyclohexadienyl phenylsulfone were prepared by one operation in 5 stages with over 50% yield and requiring no purification. A practical and efficient method for the Jacobsen asymmetric epoxidation of 1,3-cycloheptadienyl sulfone is described. The reported method is suitable for large-scale synthesis, does not use halogenated solvents nor does it require chromatography
通过5个阶段的一次操作,制备了公斤级的环庚二烯基苯砜和环己二烯基苯砜,收率超过50%,无需纯化。本文描述了一种实用且高效的1,3-环庚二烯基砜的雅克布森不对称环氧化方法。该方法适用于大规模合成,无需使用卤代溶剂,也不需要色谱分析。