[2,3]-Wittig rearrangement of allylic glycolate esters via boron and tin enolates
摘要:
Wittig rearrangement of allylic glycolate esters via boron and tin enolates gave diastereoselectivities as high as 99.5 : 0.5. Tin enolates were more stereoselective than boron enolates.
[2,3]-Wittig rearrangement of allylic glycolate esters via boron and tin enolates
摘要:
Wittig rearrangement of allylic glycolate esters via boron and tin enolates gave diastereoselectivities as high as 99.5 : 0.5. Tin enolates were more stereoselective than boron enolates.
[3,3]-Sigmatropic rearrangement of silyl ketene acetals of methyl α-(allyloxy) acetates.
作者:Stanley Raucher、Linda M Gustavson
DOI:10.1016/s0040-4039(00)84311-7
日期:1986.1
Although the lithium enolate undergoes [2,3]-sigmatropic rearrangement to give , the silylketeneacetals undergo [3,3]-sigmatropic rearrangement to give . This is the first reported [3,3]-sigmatropic rearrangement of a 1,1-dioxy-3-oxa-1,5-diene.