Improved and environmentally friendly large-scale preparation of cyclohexadienyl-, cycloheptadienyl sulfone and enantiopure epoxy cycloheptyl sulfones
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 epoxidati
Park, Taesik,Torres, Eduardo,Fuchs, Philip L.
p. 1895 - 1900
(2007/10/03)
Economical and environmentally friendly syntheses of 2-(phenylsulfonyl)-1,3-cyclohexadiene and 2-(phenylsulfonyl)-1,3-cycloheptadiene
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.
Meyers, David J.,Fuchs, Philip L.
p. 200 - 204
(2007/10/03)
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