alk-1-enyl sulfoxides is reported. The reaction between alane–pyridine complexes, triphenylphosphine, and sulfonyl chlorides affords the title products in good to excellent yields (70–94%) in short reaction times using mild conditions. The optimal ratio between reagents (alane–pyridine/PPh3/sulfonyl chloride 1.00/1.35/0.92) was obtained performing a chemiometric analysis. A rationale for the reaction was
Symmetric Diarylsulfoxides as Asymmetric Sulfinylating Reagents for Dialkylmagnesium Compounds
作者:Simon Ruppenthal、Reinhard Brückner
DOI:10.1021/jo502417j
日期:2015.1.16
dilithium salt of (S)-BINOL was added as a promotor. Alkyl aryl sulfoxides resulted in up to quantitative yield and with up to 97% ee. This demonstrates the feasibility of asymmetric sulfinylations by achiral sulfinylating agents (from the perspective of Alkyl2Mg) as well as the feasibility of asymmetricsulfoxide–magnesiumexchanges (from the perspective of Ar2SO).