Graphene oxide (GO)-catalyzed chemoselective thioacetalization of aldehydes under solvent-free conditions
摘要:
An efficient method for the synthesis of open chain, cyclic, and unsymmetrical dithioacetals from aryl/hetero-aryl/aliphatic aldehydes is described. The reaction is performed using graphene oxide (GO) as the catalyst under solvent-free and aerobic conditions. High chemoselectivity is observed in the reaction as aryl/alkyl ketones do not give thioketals under the condition. (C) 2014 Elsevier Ltd. All rights reserved.
A Modular Olefination of Aldehydes with Thiols as Coupling Partners
作者:Sabine Bognar、Manuel van Gemmeren
DOI:10.1002/chem.202203512
日期:2023.3
A simple and modular protocol for the olefination of aldehydes with thiols as reaction partners is reported. Olefins with both aromatic and aliphatic substituents were synthesized in high yields and good selectivity via unsymmetric bissulfone intermediates. The E/Z-selectivity could be switched under kinetic control through the choice of solvent. The use of simple, transition metal-free reaction conditions