On October 28, 2020, Wu, Qiumin; Chen, Jinzhu; Liu, Zhen; Xu, Yisheng published an article.Name: 1,3-Diphenylurea The title of the article was CO Activation Using Nitrogen-Doped Carbon Nanotubes for Reductive Carbonylation of Nitroaromatics to Benzimidazolinone and Phenyl Urea. And the article contained the following:
Carbonylation of nitroaroms. with CO is extensively investigated with efficient but precious group 8-10 metal-based catalysts for the productions of both industrially and academically important chems. such as isocyanates, formamides, carbamates, ureas and several types of heterocyclic compounds Herein, we report that rationally designed nitrogen-doped carbon nanotubes (N-CNTs) exhibit catalytic activity toward CO activation for carbonylation of nitroaroms. to benzimidazolinones and ureas. Under the optimal conditions, N-CNT-promoted intramol. carbonylation of 2-nitroaniline (1a) with CO leads to formation of 1,3-dihydro-2H-benzo[d]imidazol-2-one in 90% yield. Moreover, an intermol. carbonylation of nitrobenzene and aniline with CO in the presence of the N-CNT gives 70% yield of N,N’-diphenylurea. The N-CNT is also applicable to various benzimidazolinones and Ph ureas; moreover, it can be readily reused at least 9 times for the carbonylation. The theor. investigation based on d. functional theory calculations indicates that the graphitic N of the N-CNT plays a crucial step in the 1a reduction with CO. The correlation between the structural defect and catalytic performance of the N-CNT reveals an enhanced catalytic activity of the N-CNT with its increased structural defects. This research thus represents a major breakthrough in CO activation for nitroarom. carbonylation with environmental-friendly, low-cost, and carbon-based catalysts as a potential alternative to expensive and scarce noble-metal-based catalysts. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Name: 1,3-Diphenylurea
The Article related to nitrogen doped carbon nanotube catalyst reductive carbonylation nitroarom aniline, carbon monoxide activation nitrogen doped carbon nanotube, benzimidazolinone ph urea preparation green chem mol modeling, carbon catalysis, carbon monoxide, carbonylation, defect, nitrogen-doped carbon nanotubes and other aspects.Name: 1,3-Diphenylurea
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics