Oxidation of thiols, disulfides and thiolsulfonates
申请人:ATOCHEM NORTH AMERICA, INC.
(a Pennsylvania corp.)
公开号:EP0313939A2
公开(公告)日:1989-05-03
Alkanesulfonic acids and alkanesulfonyl chlorides, free of undesirable side products arising from side-chain chlorination, are prepared by oxidation with hydrogen peroxide of the corresponding alkanethiol, dialkyldisulfide or alkyl alkanethiolsulfonate mixed with aqueous hydrochloric acid.
The reaction of aromatic or benzylic disulfides with 2.5 equiv of Selectfluor (TM) in acetonitrile/water (10:1) at room temperature efficiently produced the corresponding thiosulfonates. On the other hand, the reaction of disulfides with 6.5 equiv of Selectfluor (TM) in refluxing acetonitrile/water (10:1) provided sulfonyl fluoride in high yields. (C) 2011 Elsevier Ltd. All rights reserved.
Facile synthesis of symmetric thiosulfonates by oxidation of disulfide with oxone/MX (MX = KBr, KCl, NaBr and NaCl)
作者:Palani Natarajan
DOI:10.1016/j.tetlet.2015.05.050
日期:2015.7
A new method is described for the oxidation of aliphatic- and aromatic disulfides containing electron-donating and electron-withdrawing groups to their corresponding thiosulfonates using oxone in combination with the MX (MX = KBr, KCl, NaBr and NaCl). No obvious electronic effects influence the yields of thiosulfonates. Avoiding the usage of toxic and unstable reagents, mild reaction conditions, short reaction times and cost-effectiveness are advantages of this methodology when likened to known methods for thiosulfonates syntheses. (C) 2015 Elsevier Ltd. All rights reserved.
US4956494A
申请人:——
公开号:US4956494A
公开(公告)日:1990-09-11
The organocatalytic synthesis of perfluorophenylsulfides <i>via</i> the thiolation of trimethyl(perfluorophenyl)silanes and thiosulfonates
作者:Jinyun Luo、Muze Lin、Leifang Wu、Zhihua Cai、Lin He、Guangfen Du
DOI:10.1039/d1ob01350e
日期:——
The organic superbase t-Bu-P4-catalyzed direct thiolation of trimethyl(perfluorophenyl)silanes and thiosulfonates was developed. Yields of perfluorophenylsulfides of up to 97% under catalysis of 5 mol% t-Bu-P4 were achieved. This method was shown to provide an efficient way to construct the perfluorophenyl–sulfur bond under mild metal-free reaction conditions.
开发了有机超碱t -Bu-P 4催化的三甲基(全氟苯基)硅烷和硫代磺酸盐的直接硫醇化反应。在 5 mol% t -Bu-P 4的催化下,全氟苯硫醚的产率高达 97% 。该方法被证明提供了一种在温和的无金属反应条件下构建全氟苯基-硫键的有效方法。