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-Unsaturated sulphones (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.
在–78°C下于四氢呋喃中用三丁基锡烷基锂处理α,β-不饱和砜(1),得到迈克尔型加成产物,β-三丁基锡烷基砜(2),并通过与硅胶反应的方法相继除去β-,得到脱磺酰化的烯烃(3)具有良好的收率。