Copper-Catalyzed Formation of Sulfur-Nitrogen Bonds by Dehydrocoupling of Thiols with Amines
作者:Nobukazu Taniguchi
DOI:10.1002/ejoc.201000167
日期:2010.5
Copper-catalyzed formation of sulfur–nitrogen bonds can be performed by a dehydrocoupling of aryl thiols with amines. Sulfenamides or sulfonamides can be produced by the use of a copper catalyst in air or under oxygen atmosphere. Furthermore, a reaction involving the combination of a palladium catalyst and a copper catalyst selectively afforded sulfinamides.
It was found that N-(arylthio)-t-butylaminyls (2) are easily generated by the photolysis of N-t-butylbenzene-sulfenamides (1). The ESR spectra of 2 were split into a 1 : 1 : 1 triplet by the interaction with the nitrogen nucleus (11.70–11.89 G), and each of the triplet was further split by the ring protons (ao-H: 0.89–1.07 G). The g-values of 2 lie in the range from 2.0068–2.0073. The radicals persist in benzene and it appears that they are not sensitive to the atmospheric oxygen.
研究发现N-(芳硫基)-叔丁基氨基(2)很容易通过N-叔丁基苯次磺酰胺(1)的光解生成。 2的ESR光谱通过与氮核(11.70–11.89 G)的相互作用分裂成1:1:1三重态,并且每个三重态进一步被环质子(ao-H: 0.89–1.07 G)分裂)。 2 的 g 值范围为 2.0068–2.0073。这些自由基持续存在于苯中,并且它们似乎对大气中的氧气不敏感。
Copper-Catalyzed Synthesis of Sulfenamides Utilizing Diaryl Disulfides with Alkyl Amines
作者:Nobukazu Taniguchi
DOI:10.1055/s-2007-984539
日期:2007.7
The copper-catalyzed coupling of diaryl disulfides with alkyl amines can afford various sulfenamides in good yields. Furthermore, the present reaction is efficient and can be used for both of the aryl sulfide groups on disulfide.