A free radical‐initiated methylation and/or α‐chloro‐β‐methylation of N‐arylacrylamides with dimethyl sulfoxide under the analogous Fenton reaction condition has been developed, which provides an effective and facile cascade strategy for the synthesis of oxindoles and chlorinated amides.
Iron-Mediated Azidomethylation or Azidotrideuteromethylation of Active Alkenes with Azidotrimethylsilane and Dimethyl Sulfoxide
作者:Rui Zhang、Haifei Yu、Zejiang Li、Qinqin Yan、Pan Li、Jilai Wu、Jing Qi、Menglu Jiang、Lixian Sun
DOI:10.1002/adsc.201800078
日期:2018.4.3
A radical azidomethylation of various alkenes with azidotrimethylsilane and dimethylsulfoxide has been achieved under mild reaction conditions, and the method efficiently introduces common and valuable azide and methyl groups into organic compounds. It offers a convenient method for preparing organic azides, which can be easily transformed into related amine derivatives and N‐heterocycles. Control
A photoredox 1,1-dichloromethylation of alkenes with the readily available bulk chemical chloroform was described, furnishing a variety of 1,1-dichloroalkane products selectively. Furthermore, this transformation could proceed smoothly on gram-scale, and the obtained products could transform into diverse γ-lactam derivatives with simple treatment. Mechanistically, the single electron transfer (SET)