Molecular iodine-mediated synthesis of thiocarbamates from thiols, isocyanides and water under metal-free conditions
作者:Wen-Hu Bao、Chao Wu、Jing-Ting Wang、Wen Xia、Ping Chen、Zilong Tang、Xinhua Xu、Wei-Min He
DOI:10.1039/c8ob01820k
日期:——
A metal-free and efficient molecular iodine-mediated protocol has been developed to prepare thiocarbamates from readily available thiols, isocyanides and water.
Synthesis of carbamothioate derivatives via a copper catalyzed thiocarboxamidation of aryl iodides
作者:Mehdi Khalaj
DOI:10.1007/s00706-020-02613-6
日期:2020.6
AbstractA catalytic route to carbamothioate derivatives through a reaction involving isocyanides, elemental sulfur, and aryl iodides has been developed. The reaction scope has been examined using a range of isocyanides and aryl iodides. The reactions involve two consecutive C–S bond formations. Control experiment revealed that the reaction proceeds through an iminium species. Graphic abstract
Iodine-Catalyzed Odorless Synthesis of <i>S</i>-Thiocarbamates with Sulfonyl Chlorides as a Sulfur Source
作者:Wen-Hu Bao、Min He、Jing-Ting Wang、Xin Peng、Men Sung、Zilong Tang、Si Jiang、Zhong Cao、Wei-Min He
DOI:10.1021/acs.joc.9b00178
日期:2019.5.17
efficient protocol for the direct preparation of various S-thiocarbamates with readily available and inexpensive sulfonyl chlorides as an odorless sulfur source was developed. The employment of easily available reactants, excellent functional group tolerability, and mild reaction conditions make this process very practical.
A general visible-light-promoted metal-free synthesis of secondary and tertiary thiocarbamates starting from thiosulfonates and N-substituted formamides is developed. By employing rhodamine B as a photocatalyst and tert-butyl hydroperoxide (TBHP) as an oxidant, a wide scope of thiocarbamates can be obtained through direct thiolation of acyl C–H bonds under irradiation of blue light at room temperature
the construction of thiocarbamates from readily available sodium sulfinates, isocyanides, and water has been described. The present methodology offers a facile and practical route to a variety of thiocarbamates in moderate to good yields with favorable functional group tolerance by use odorless sodium sulfinates as the sulfur source. The mechanistic studies suggest the present transformation involves