Stereoselective synthesis of substituted tetrahydrofurans using 5-endo-trig cyclisation reactions
作者:Donald Craig、Neil J. Ikin、Neil Mathews、Alison M. Smith
DOI:10.1016/s0040-4020(99)00832-7
日期:1999.11
Sulfonyl-substituted homoallylic alcohols undergo 5-endo-trig cyclisationreactions on treatment with base, with cyclisation stereoselectivity depending on double bond geometry.
Stereoselective synthesis of 3-(phenylsulphonyl)-2,5 disubstituted tetrahydrofurans via 5-endo-trig ring-closure reactions
作者:Donald Craig、Alison M. Smith
DOI:10.1016/s0040-4039(00)92345-1
日期:1992.1
The synthesis and stereoselective 5-endo-trig cyclization reactions of a series of sulphonyl-substituted homoallylicalcohols are reported. Some competing reactions are described, and a model is proposed to account for the observed stereoselectivity.