Ring cleaving selenenylation and sulfenylation of cyclopropane derivatives promoted by TiCl4
作者:Hans-Ulrich Reissig、Ingrid Reichelt
DOI:10.1016/s0040-4039(01)81709-3
日期:1984.1
A synthesis of 2-selenenyl and sulfenyl 4-oxoesters based on Lewis acid promoted activation of methyl 2-trimethylsiloxy cyclopropanecarboxylates is reported. A mechanistic scheme for this new C-Se and C-S forming reaction is disclosed.
A novel rearrangement leading to methoxycarbonylmethylated silyl enol ethers
作者:Hans-Ulrich Reissig
DOI:10.1016/s0040-4039(00)98693-3
日期:1985.1
Methyl 2-siloxycyclopropanecarboxylates rearrange smoothly and quantitatively to the corresponding silylenolethers (3) by addition of a catalytical amount of iodo trimethylsilane. Scope and limitation of this novelprocess as well as the synthesis of the electron rich diene (10a) are described.