A Novel One-Pot Solvent-Free, Triethylamine-Assisted, Selenium-Catalyzed Synthesis of Thiocarbamates from Nitroarenes, Carbon Monoxide, and Thiols
作者:Shiwei Lu、Xiaopeng Zhang
DOI:10.1055/s-2005-869839
日期:——
A novel one-pot solvent-free synthesis of a series of thiocarbamates is reported. Nitroarenes, carbon monoxide, and thiols are the starting materials, with cheap element selenium as catalyst; this method offers a simple access to thiocarbamates mostly in moderate to good yields. The selenium catalyst can be easily recovered and recycled.
A Selenium-Catalysed Synthesis of Thiocarbamates from Nitroarenes, Carbon Monoxide and Thiols under Mild Conditions
作者:Xiao-Peng Zhang、Shi-Wei Lu
DOI:10.3184/030823408x360346
日期:2008.10
An improved method for the selenium-catalysed synthesis of thiocarbamates under mild conditions has been developed. With acetone as solvent, the one-pot selenium-catalysed carbonylation of nitroarenes and thiols with carbon monoxide proceeds smoothly at atmosphericpressure and ambient temperature.
Addition of Thiols to Isocyanates Catalyzed by Simple Rare-Earth-Metal Amides: Synthesis of <i>S</i>-Alkyl Thiocarbamates and Dithiocarbamates
作者:Chengrong Lu、Lijuan Hu、Bei Zhao、Yingming Yao
DOI:10.1021/acs.organomet.9b00147
日期:2019.5.13
Simple additions of thiols to isocyanates/isothiocyanates under mild conditions led to the efficient preparation of various S-alkyl thiocarbamates and dithiocarbamates, respectively. The lanthanum complex La[N(SiMe3)2]3 was found to be active to give thiocarbamates and dithiocarbamates in medium to excellent yields with a good group tolerance. A plausible mechanism of the catalytic transformation was
A CONVENIENT, ONE-POT SYNTHESIS OF THIOCARBAMATES USING<i>BIS</i>(TRICHLOROMETHYL) CARBONATE
作者:W. K. Su、J. P. Zhang、X. R. Liang
DOI:10.1080/00304940609356001
日期:2006.8
and of amines were required. Despite of the numerous routes, most methods involve unstable reagents, multi-step procedures, harsh reaction conditions, expensive catalyst or complex materials. Base on these premises, we now report a mild and convenient onepot procedure for the synthesis of thiocarbamates using bis(trichloromethy1) carbonate (BTC) . BTC is well known as an important equivalent for phosgene
An efficient one-pot synthesis of N,N′-disubstituted ureas and carbamates from N-acylbenzotriazoles
作者:Anoop S. Singh、Dhananjay Kumar、Nidhi Mishra、Vinod K. Tiwari
DOI:10.1039/c6ra14131e
日期:——
A facile and high-yielding one-pot synthesis of carbamates and N,N'-disubstituted symmetrical ureas from N-acylbenzotriazoles has been devised. It is believed that, the intermediate acyl-azide undergo Curtius rearrangement and under different...