Aqueous Reaction of Alcohols, Organohalides, and Odorless Sodium Thiosulfate under Transition-Metal-Free Conditions: Synthesis of Unsymmetrical Aryl Sulfides via Dual C–S Bond Formation
作者:Bei-Bei Liu、Xue-Qiang Chu、Huan Liu、Ling Yin、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/acs.joc.7b01653
日期:2017.10.6
A transition-metal-free process for the synthesis of unsymmetrical aryl sulfides via dual C–S bond formation by a one-pot three-component reaction of alcohols, organohalides, and odorless sodium thiosulfate in water has been developed. In addition, the aryl sulfides could also be prepared by the reaction of the corresponding alcohols and Bunte salts under the identical conditions. This protocol provides
A direct C2–H thiolation of azoles with Bunte salts was achieved under the combined action of copper and silver salts, furnishing various substituted 2-thioazoles in moderate to good yields.
the first example of copper-catalyzed oxidative thioamination of maleimides with secondary amines and Bunte salts with the achievement of C-N and C-S bonds in a single flask. The protocol showcases a prominently broad substrate scope and is also efficient for the late-stage modification of an array of pharmaceuticals. Preliminary mechanistic investigation indicates copper-catalyzed oxidative amination
Imidazole Promoted Highly Efficient Large-Scale Thiol-Free Synthesis of Symmetrical Disulfides in Aqueous Media
作者:Babak Mokhtari、Ali Reza Kiasat、Javid Monjezi
DOI:10.1080/10426507.2014.1003643
日期:2015.10.3
Abstract A highly efficient and environmentally friendly method for the imidazole promoted preparation of symmetrical organic disulfides fromBuntesalts is described. This thiol-free procedure produces the desired disulfides even on a large scale by reaction of Buntesalts with imidazole in good to high yields in aqueous media.