We report the metal-free chalcogenation of cycloketone oxime esters with dichalcogenides via a radical process. Because of the metal-free condition and use of readily accessible dichalcogenides, this method is an effective and green strategy for the synthesis of chalcogen-substituted butyronitrile.
Discovery of 4-<i>tert</i>-Butyl-2,6-dimethylphenylsulfur Trifluoride as a Deoxofluorinating Agent with High Thermal Stability as Well as Unusual Resistance to Aqueous Hydrolysis, and Its Diverse Fluorination Capabilities Including Deoxofluoro-Arylsulfinylation with High Stereoselectivity
作者:Teruo Umemoto、Rajendra P. Singh、Yong Xu、Norimichi Saito
DOI:10.1021/ja106343h
日期:2010.12.29
groups to CF(3) groups, in high yields. 1k also converts C(=S) and CH(3)SC(=S)O groups to CF(2) and CF(3)O groups, respectively, in high yields. In addition, 1k effects highly stereoselective deoxofluoro-arylsulfinylation of diols and amino alcohols to give fluoroalkyl arylsulfinates and arylsulfinamides, with complete inversion of configuration at fluorine and the simultaneous, selective formation of
B12 mimicry in a weak ligand environment: oxidation and alkylation of thiols
作者:Shantanu Chowdhury、Purnima M. Samuel、Indira Das、Sujit Roy
DOI:10.1039/c39940001993
日期:——
The first examples of alkylation and oxidation of thiols by cobalt in weakly coordinating ligand (MeCN) environment is presented as a mimic to B12-dependent nonenzymatic reaction.
A MILD REDUCTION OF ARENESULFONIC ACID AND ITS DERIVATIVES WITH DIPHOSPHORUS TETRAIODIDE
作者:Hitomi Suzuki、Hiroyuki Tani、Atsuhiro Osuka
DOI:10.1246/cl.1984.139
日期:1984.1.5
When treated with diphosphorus tetraiodide in boiling acetonitrile or under neat conditions, arenesulfonic acids, their salts, chlorides, esters, and amides are reduced to aryl disulfides in good to moderate yields.
SUBSTITUTED PHENYLSULFUR TRIFLUORIDE AND OTHER LIKE FLUORINATING AGENTS
申请人:UMEMOTO TERUO
公开号:US20080039660A1
公开(公告)日:2008-02-14
Novel substituted phenylsulfur trifluorides that act as fluorinating agents are disclosed. Also disclosed are methods for their preparation and methods for their use in introducing one or more fluorine atoms into target substrate compounds. Finally, various intermediate compounds for use in preparing substituted phenylsulfur trifluorides are provided.