Coenzyme NAD+ models can be applied in the photooxygenation of sulfides to sulfoxides as organocatalysts at room temperature. A series of sulfoxides are synthesized easily with this protocol and the possible mechanism is discussed. This procedure provides a reliable approach to the clean production of useful sulfoxides in synthetic chemistry.
Preparation of optically active ortho-chloro- and ortho-bromophenyl sulfoxides
作者:Christoph Imboden、Philippe Renaud
DOI:10.1016/s0957-4166(99)00078-6
日期:1999.3
The preparation of the diastereomerically pure menthyl (S)-2-chloro- and (S)-2-bromophenyl sulfinates by esterification of the corresponding sulfinic acids with ( 1 R,2S,5R)- (-)-menthol and recrystallization/epimerization is reported. The two sulfinates have been converted into enantiomerically pure aryl, vinyl and alkyl sulfoxides by reaction with organomagnesium reagents. These sulfoxides are useful chiral auxiliaries to control the stereochemical outcome of radical reactions. (C) 1999 Elsevier Science Ltd. Ail rights reserved.
Synthesis of Diverse <i>o</i>-Arylthio-Substituted Diaryl Ethers by Direct Oxythiolation of Arynes with Diaryl Sulfoxides Involving Migratory <i>O</i>-Arylation
A diverse range of o-arylthio-substituted diarylethers has been synthesized by direct oxythiolation of arynes with diaryl sulfoxides that involves the formation of the C–O and C–S bonds followed by migratory O-arylation.