A New General Route to Acceptor-Substituted Vinyloxiranes via Siloxyoxiranes - Novel Promising Synthetic Building-Blocks
作者:Ernst Schaumann、Frank Tries
DOI:10.1055/s-2002-19796
日期:——
Epoxidation of silylenolethers 2a,b with dimethyldioxirane yields siloxyoxiranes 3a,b. Anions 4a-d lead to nucleophilic ring-opening in the acetal position C-1 of 3 to give diols 5a-d. Monotosylation and cyclisation provide acceptor-substituted vinyloxiranes 6a-d.