Electrochemical Oxidative Cross‐Coupling Reaction to Access Unsymmetrical Thiosulfonates and Selenosulfonates
作者:Xiaofeng Zhang、Ting Cui、Yanghao Zhang、Weijin Gu、Ping Liu、Peipei Sun
DOI:10.1002/adsc.201900047
日期:2019.4.23
The electrochemical oxidativecross‐dehydrogenativecoupling of arylsulfinic acids with thiophenols was achieved via a radical process. A wide range of arylsulfinic acids and substituted thiophenols were found to be tolerated, providing unsymmetrical thiosulfonates in good to excellent yields. This electrochemical method can also be used for the reaction of arylsulfinic acids with disulfides or diselenides
A green and practical protocol between sulfonyl hydrazides and disulfides is herein reported for the synthesis of unsymmetrical thiosulfonates with the assistance of H2O2 in PEG-400, releasing N2 and H2O as the byproducts. The efficient and compatible process was considered to take place in the absence of metallic catalysts through a radical mechanism as determined by EPR analysis.
磺酰基酰肼和二硫化物之间的绿色和实际协议在本文中报道的不对称硫代磺酸酯与H的援助合成2 Ó 2在PEG-400,释放Ñ 2和H 2 O作为副产物。有效和相容的过程被认为是在不存在金属催化剂的情况下通过EPR分析确定的自由基机理进行的。
Visible-Light-Driven Unsymmetric <i>gem</i>-Difunctionalization of Vinyl Azides with Thiosulfonates or Selenosulfonates
作者:Tao Wang、Yuan-Yuan Zong、Biao Yang、Tao Huang、Xiao-Ling Jin、Qiang Liu
DOI:10.1021/acs.orglett.4c00183
日期:2024.3.1
Thiosulfonylation and selenosulfonylation of vinylazides with thiosulfonates and selenosulfonates were achieved using Cu(dap)2Cl as a photosensitizer under visible-light irradiation. This reaction is the application of a vinylazide substrate in a group transfer radical addition (GTRA) reaction, through β-difunctionalization, to obtain a variety of unsymmetric difunctionalized N-unprotected enamines
precursors has been developed to construct sulfides, disulfides, selenides, sulfoxides and sulfones. Combining this deacylative process with SN2 or coupling reactions provides novel and convenient modular approaches toward unsymmetrical or symmetrical disulfides.
已经开发出一种使用无张力甲基酮作为自由基前体的温和光催化脱酰策略来构建硫化物、二硫化物、硒化物、亚砜和砜。将此脱酰过程与 S N 2 或偶联反应相结合,为不对称或对称二硫化物提供了新颖且方便的模块化方法。