Zur umsetzung von trimethylsilyl-methylen-dimethylsulfuran mit carbonylverbindungen
作者:Clemens Fleischmann、Erich Zbiral
DOI:10.1016/s0040-4020(01)93586-0
日期:1978.1
The first step in the reaction of trimethylsilylmethylene-dimethylsulfurane 1 (prepared from (CH3)3SiCH2S̄(CH3)2Ī with 1 equivalent (CH3)3COK) with carbonyl compounds (R1)(R2)CHCOCH2R32 leads Peterson-like way to the non-isolable vinylsulfoniumdimethylsilanolate-intermediate B or its recombined product A. Depending on the reaction conditions and the nature of the substituents R1, R2 and R3 there exist