Disproportionate Coupling Reaction of Sodium Sulfinates Mediated by BF<sub>3</sub>·OEt<sub>2</sub>: An Approach to Symmetrical/Unsymmetrical Thiosulfonates
作者:Liang Cao、Shi-He Luo、Kai Jiang、Zhi-Feng Hao、Bo-Wen Wang、Chu-Ming Pang、Zhao-Yang Wang
DOI:10.1021/acs.orglett.8b01808
日期:2018.8.17
The BF3·OEt2-mediated disproportionate coupling reaction of sodium sulfinates was found for the first time. In this reaction, various S–S(O)2 bonds can be formed, efficiently giving thiosulfonates in moderate to excellent yields. As a convenient protocol for the synthesis of symmetrical and unsymmetrical thiosulfonates, its reaction mechanism involves the formation of a thiyl radical and sulfonyl radical
The reaction of N-Ts-(2-bromophenyl)alkylamines with aldehydes in the presence of a catalytic amount of a rhodium complex results in the intramolecular aminocarbonylation of the aryl halides to give five-, six-, and seven-membered benzolactams.
A bifunctional strategy for N-heterocyclic carbene-stabilized iridium complex-catalyzed <i>N</i>-alkylation of amines with alcohols in aqueous media
作者:Ming Huang、Yinwu Li、Jiahao Liu、Xiao-Bing Lan、Yan Liu、Cunyuan Zhao、Zhuofeng Ke
DOI:10.1039/c8gc02298d
日期:——
2-hydroxypyridine and a thermally stable N-heterocyclic carbene ligand, an Ir-catalyzed N-monoalkylation reaction has been developed in aqueous media under base-free conditions. This reaction proceeds smoothly with high yields of various aromatic amines and sulfonamides with a wide range of primary alcohols. Experimental and computational studies revealed a metal–ligand cooperative mechanism and its thermal stability
Diiodine–Triethylsilane System: Reduction of N-Sulfonyl Aldimines to N-Alkylsulfonamides
作者:Jin Jiang、Lili Xiao、Yu-Long Li
DOI:10.1055/s-0040-1706544
日期:2021.2
using these reagents are easy to operate and require mild reaction conditions. Molecular iodine and a hydrosilane were used to reduce N-sulfonyl aldimines to the corresponding N-alkylsulfonamides. This transformation is a practicalmethod for the synthesis of N-alkylsulfonamides.