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.
Sustainable aerobic oxidative coupling of thiols and amines for selective formation of sulfenamides using MOF-derived cobalt nanoparticles supported on N-doped carbon
carbon has been developed as a heterogeneous catalyst for aerobicoxidative S–N coupling. This catalytic system allows for the efficient and selective transformation of various thiols and amines to sulfenamides with moderate to high yields. The catalyst can be recycled for six consecutive runs with negligible loss of activity. Cobalt nanoparticles were determined to be the catalytically active sites through
ZIF-67 衍生的钴基 N 掺杂碳已被开发为用于有氧氧化 S-N 偶联的多相催化剂。该催化系统允许将各种硫醇和胺以中等到高产率高效和选择性地转化为亚磺酰胺。该催化剂可以连续循环六次,活性损失可忽略不计。通过材料表征和控制实验确定钴纳米粒子是催化活性位点。初步的机理研究表明一种以二硫化物作为中间体的激进机理。