The synthesis of sulfenamides via the oxidant- and metal-free electrochemical dehydrogenative coupling reaction of thiols and amines.
通过硫醇和胺的氧化和无金属电化学脱氢偶联反应合成亚磺酰胺。
Reusable cobalt-phthalocyanine in water: efficient catalytic aerobic oxidative coupling of thiols to construct S–N/S–S bonds
作者:Yingchao Dou、Xin Huang、Hao Wang、Liting Yang、Heng Li、Bingxin Yuan、Guanyu Yang
DOI:10.1039/c7gc00401j
日期:——
A new aerobic oxidative coupling of thiols in water to construct sulfenamides or disulfides was developed, utilizing cobalt(II)phthalocyanine-tetra-sodium sulfonate as the catalyst and O2 as the oxidant. The mother liquor could be recycled up to 20 times with negligible loss of activity and only a minor decrease of product yield.
A comprehensive electrochemical study of 2-mercaptobenzoheterocyclic derivatives. Air-assisted electrochemical synthesis of new sulfonamide derivatives
sulfonamide synthesis. The results also show that, in the time scale of our voltammetric experiments, oxidation of MBI does not lead to dimer formation. Our voltammetric studies suggest that the formed dimer is adsorbed on the electrode surface. The amount and intensity of adsorption depends on the type heterocyclic thiol, solvent, switching potential and solution pH. The mechanism of synthesis of sulfonamide
REACTION OF SULFENAMIDES WITH DI-ALKYL AND TRIALKYL PHOSPHITES.AN EFFICIENT SYNTHESIS OF PHOSPHORAMIDATES BY UNUSUAL SUBSTITUTION AT S–N BOND IN (2-BENZOTHIAZOLYL)SULFENAMIDES
作者:Sigeru Torii、Noboru Sayo、Hideo Tanaka
DOI:10.1246/cl.1980.695
日期:1980.6.5
Regioselective attack of the trivalent phosphorus atom of dialkyl and trialkyl phosphites on either nitrogen or sulfur atom of sulfenamides has been found. The reaction of phenylsulfenamides with dialkyl phosphites yielded phosphorothiolates, whereas the treatment of (2-benzothiazolyl)sulfenamides with dialkyl and trialkyl phosphites gave phosphoramidates in excellent yields.
FUNCTIONAL REINFORCING FILLERS MODIFIED WITH ALKENYLALKOXYSILANE AND PREPARING METHOD OF THE SAME
申请人:KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
公开号:US20140102332A1
公开(公告)日:2014-04-17
Disclosed are a functional reinforcing filler including inorganic particles surface-modified with an alkenylsilanol obtained by hydrolyzing an alkenylalkoxysilane compound, and a method for preparing the same. Since the disclosed functional reinforcing filler has a functional group having a double bond, it has good reactivity for styrene-butadiene rubber and sulfur. Thus, when used as a functional reinforcing filler in the manufacture of rubber, it allows improvement of physical properties through adjustment of the addition amount of sulfur without additional use of the coupling agent. In addition, because of superior hydrolysis reactivity, the problem of alcohol can be solved and a rubber mixture with long scorch time can be prepared. In particular, when the functional reinforcing filler of the present invention is used in the manufacture of tires, improvement in modulus, tensile strength, rotational resistance and wet traction performance can be expected.