Catalyst-Dependent Selective Synthesis of O/S- and S/S-Acetals from Enol Ethers
作者:Antonio L. Braga、Claudio C. Silveira、Luciano Dornelles、Gilson Zeni、Flavia A. D. Galarza、Ludger A. Wessjohann
DOI:10.1080/00397919508015466
日期:1995.10
Abstract Enol ethers are reacted with mercaptanes to give the corresponding O/S- or S/S-acetals in medium to high yield. Either product can be formed selectively depending on the acid catalyst and the reaction time applied.
Lewis Acid Mediated Selective Chalcogenalkylation of Silyl Enol Ethers with [O,S]-Acetals
作者:Antonio L. Braga、Luciano Dornelles、Claudio C. Silveira、Ludger A. Wessjohann
DOI:10.1055/s-1999-3429
日期:1999.4
Silyl enol ethers of ketones were selectively alkylated with [O,S]-acetals mediated by Lewis acid in a Mukaiyama type Aldol reaction. The products were β-alkoxy- and /or β-sulfanyl carbonyl compounds depending on the catalyst employed.