Electrophilic Vinylation of Thiols under Mild and Transition Metal‐Free Conditions
作者:Laura Castoldi、Ester Maria Di Tommaso、Marcus Reitti、Barbara Gräfen、Berit Olofsson
DOI:10.1002/anie.202002936
日期:2020.9
methodology displays high functional group tolerance and proceeds under mild and transition metal‐free conditions without the need for excess substrate or reagents. Mercaptothiazoles could be vinylated under modified conditions, resulting in opposite stereoselectivity compared to previous reactions with vinyliodonium salts. Novel VBX reagents with substituted benziodoxolonecores were prepared, and improved
Stereoselective Synthesis of Substituted 2-(Z-Styrylsulfonyl)-1<i>H</i>-imidazoles and Benzothiazole
作者:N. Guravaiah、V. Rajeswar Rao
DOI:10.1080/00397910903009422
日期:2010.2.26
A novel method has been reported involving the synthesis of z-styryl sulfides by the reaction of phenylacetylene with 2-mercpto benzimidazoles and benzthiazole using NaOH as a base in absolute ethanol. On further oxidation with H2O2, these resulted in the formation of the desired styryl sulfones in good yields with retention of stereochemistry.