reaction does not give the polyvinyl ether but results in [1,3] O to C rearrangement to give the corresponding aldehyde, RCH2CHO in moderate to good yields. The rearrangement selectively proceeds when vinyl ethers having α-substituents are used as the starting materials to give the corresponding ketones in high yields. With catalytic amounts of hydrosilanes, the rearrangement gives ketones or aldehydes selectively
Triisobutylaluminium promoted reductive rearrangement of substituted vinyl ethers to homologous alcohols
作者:Bérengère du Roizel、Matthieu Sollogoub、Alan J. Pearce、Pierre Sinaÿ
DOI:10.1039/b003277h
日期:——
Substituted vinyl ethers carrying electron-donating groups in
the ether moiety undergo smooth oxygen to carbon rearrangement with
triisobutylaluminium to afford chain extended alcohols.