On May 1, 2020, Yoo, Kwangho; Lee, Jooyeon; Park, Myung Hwan; Kim, Youngjo; Kim, Hyun Jin; Kim, Min published an article.Formula: C13H12N2O The title of the article was Ir-Catalyzed C-H Amidation Using Carbamoyl Azides for the Syntheses of Unsymmetrical Ureas. And the article contained the following:
An iridium-catalyzed C-H amidation for the syntheses of unsym. urea was developed using carbamoyl azides (R(R’)N-C(O)-N3) as the nitrogen source. A combination of iridium and silver gave an active catalyst for C-N bond formation. A variety of urea derivatives were synthesized using carbamoyl azides with only dinitrogen byproducts. Finally, the use of the transient directing group strategy with carbamoyl azides extended the substrate scope of the catalytic C-H amidation to yield aldehyde-containing unsym. ureas. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Formula: C13H12N2O
The Article related to carbamoyl azide benzamide directing group iridium silver catalyst amidation, unsym urea preparation, General Organic Chemistry: Synthetic Methods and other aspects.Formula: C13H12N2O
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics