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
Graphene oxide (GO)-catalyzed chemoselective thioacetalization of aldehydes under solvent-free conditions
作者:Babli Roy、Debasish Sengupta、Basudeb Basu
DOI:10.1016/j.tetlet.2014.10.043
日期:2014.11
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.
Heteroaromatic Dithioacetals, Part II: Evidence of a Novel Mechanism for the Exclusive Formation of Unsymmetrical Dithioacetals.
作者:Jacques Yves Gauthier、Evelyn O. Martins、Robert N. Young、Robert J. Zamboni
DOI:10.1055/s-2002-31921
日期:——
The exclusive production of unsymmetrical dithioacetals in the BF 3 Et 2 O catalyzed thioacetalization of aldehydes results from novel and unsuspected mechanistic considerations.
在 BF 3 Et 2 O 催化的醛的硫代缩醛化中,不对称二硫代缩醛的唯一产生源于新颖且未预料到的机理考虑。