A new desulphonylation of α,β-unsaturated sulphones via conjugate addition of tributylstannyl-lithium
作者:Masahito Ochiai、Tatsuzo Ukita、Eiichi Fujita
DOI:10.1039/c39830000619
日期:——
α,β-Unsaturatedsulphones (1) on treatment with tributylstannyl-Lithium in tetrahydrofuran at –78 °C, give the Michael type addition products, β-tributylstannyl sulphones (2), and their successive β-elimination by reaction with silica gel affords the desulphonylated olefins (3) in good yields.
A NEW STEREOSELECTIVE SYNTHESIS OF VINYLSILANES UTILIZING VINYL SULFONES
作者:Masahito Ochiai、Tatsuzo Ukita、Eiichi Fujita
DOI:10.1246/cl.1983.1457
日期:1983.9.5
Vinylsilanes 3 were prepared stereoselectively from vinyl sulfones via the formation of β-tributylstannyl sulfones 2. The stereochemistry of 3 was controlled by the choice of the method for the destannylsulfonation of 2.