Economical and Environmentally Friendly Syntheses of 2-(Phenylsulfonyl)-1,3-cyclohexadiene and 2-(Phenylsulfonyl)-1,3-cycloheptadiene1
摘要:
A large-scale and inexpensive synthesis of dienes 1 and 2 has been developed via a four-step procedure starting with benzenethiol and the corresponding cyclic ketone. No chromatography is required.
Economical and Environmentally Friendly Syntheses of 2-(Phenylsulfonyl)-1,3-cyclohexadiene and 2-(Phenylsulfonyl)-1,3-cycloheptadiene<sup>1</sup>
作者:David J. Meyers、Philip L. Fuchs
DOI:10.1021/jo0107047
日期:2002.1.1
A large-scale and inexpensive synthesis of dienes 1 and 2 has been developed via a four-step procedure starting with benzenethiol and the corresponding cyclic ketone. No chromatography is required.
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