An efficient copper-catalyzed system for C-S cross-coupling of aromatic thiols with aryl bromides and chlorides has been developed using 1,2,3,4-tetrahydroquinoline-8-ol as a ligand. It is noteworthy that this method is proved to be especially effective for aryl bromides with electron-donating groups. By this protocol, a variety of thioethers as well as symmetrical and unsymmetrical bis-thioethers
One-Pot Synthesis of Symmetrical and Unsymmetrical Aryl Sulfides by Pd-Catalyzed Couplings of Aryl Halides and Thioacetates
作者:Namjin Park、Kyungho Park、Mihee Jang、Sunwoo Lee
DOI:10.1021/jo2007253
日期:2011.6.3
Aryl sulfides were obtained from the coupling reaction of S-aryl (or S-alkyl) thioacetates and aryl bromides in the presence of palladium catalyst. This reaction method enables the one-pot synthesis of symmetrical and unsymmetrical diaryl sulfides by employing potassium thioacetate with aryl iodides and aryl bromides.
Aryl sulfone compounds of formula I and II are described and have therapeutic utility, particularly in the treatment of diabetes, obesity and related conditions and disorders:
In this communication, human 11 beta-hydroxysteroid dehydrogenase type 1 (11 beta-HSD1) inhibitory activities of a novel series of diarylsulfones are described. Optimization of this series resulted in several highly potent 11b-HSD1 inhibitors with excellent pharmacokinetic (PK) properties. Compound (S)-25 showed excellent efficacy in a non-human primate ex vivo pharmacodynamic model. (C) 2010 Elsevier Ltd. All rights reserved.