Synthesis of sulfonamides and sulfonic esters via reaction of amines and phenols with thiols using H2O2–POCl3 system
作者:Kiumars Bahrami、Mohammad M. Khodaei、Jamshid Abbasi
DOI:10.1016/j.tet.2012.04.040
日期:2012.6
oxychloride efficiently promoted the synthesis of sulfonamides and sulfonicesters from thiols with hydrogen peroxide in the presence of Amberlite IRA-400 (OH−). This method has been applied to a variety of substrates including nucleophilic and sterically hindered amines, and also phenols with excellent yields of sulfonamides and sulfonicesters. In most cases these reactions are highly selective, simple,
Direct Conversion of Thiols to Sulfonyl Chlorides and Sulfonamides
作者:Kiumars Bahrami、Mohammad M. Khodaei、Mehdi Soheilizad
DOI:10.1021/jo901924m
日期:2009.12.18
H2O2 in combination with SOCl2 proved to be it highly reactive reagent for the direct oxidative conversion of thiol derivatives to the corresponding sulfonyl chlorides with high purity through oxidative chlorination. Upon reaction with amines, the corresponding sulfonamides were obtained in excellent yields and in very short reaction times.
Baxter; Chattaway, Journal of the Chemical Society, 1915, vol. 107, p. 1822
作者:Baxter、Chattaway
DOI:——
日期:——
High yielding protocol for direct conversion of thiols to sulfonyl chlorides and sulfonamides
In this paper, a new method for oxidative chlorination of thiols to sulfonyl chlorides and sulfonamides using H2O2 in the presence of TMSCl is reported. The excellent yields, short reaction times, excellent efficiencies, low costs, and easy separation of products are the most important advantages of this method.[GRAPHICS].
Synthesis, evaluation and mechanism exploration of 2-(N-(3-nitrophenyl)-N-phenylsulfonyl)aminoacetohydroxamic acids as novel urease inhibitors
Thirteen 2-(N-(3-nitrophenyl)-N-phenylsulfonyl)aminoacetohydroxamicacids which were reported for the first time were designed and synthesized as novel urease inhibitors. Most of them showed higher potency than the positive control acetohydroxamic acid, with 2-(N-(3-nitrophenyl)-N-(4-bromophenylsulfonyl)aminoacetohydroxamicacid (d7) being the most active (IC50 = 0.13 ± 0.01 μM). Compound d7 reversibly