名称:
Conversion of 1,3-oxathiolanes to 1,4-oxathianes using a silylated diazoester
摘要:
Treatment of substituted 1,3-oxathiolanes with ethyl (triethylsilyl)diazoacetate in the presence of a copper catalyst effects one-carbon ring expansion to the corresponding 3-triethylsilyl-1,4-oxathiane-3-carboxylates. Subsequent desilylation can be brought about by treatment with tetrabutyl ammonium fluoride. (C) 2004 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tet.2004.10.063