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.