Recently I am researching about VISIBLE-LIGHT PHOTOREDOX; CROSS-COUPLING REACTIONS; ORGANIC AZIDES; CURTIUS REARRANGEMENT; PROTECTED AMINES; CARBOXYLIC-ACIDS; H AMINATION; CHEMISTRY; MILD; DIVERSITY, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21871131]; Natural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Province [BK20191244]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [020514380131]. SDS of cas: 385-00-2. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Zhang, YP; Ge, X; Lu, HJ; Li, GG. The CAS is 385-00-2. Through research, I have a further understanding and discovery of 2,6-Difluorobenzoic acid
Transition-metal-catalyzed sp(2) C-N bond formation is a reliable method for the synthesis of aryl amines. Catalytic sp(3) C-N formation reactions have been reported occasionally, and methods that can realize both sp(2) and sp(3) C-N formation are relatively unexplored. Herein, we address this challenge with a method of catalytic decarboxylative C-N formation that proceeds through a cascade carboxylic acid activation, acyl azide formation, Curtius rearrangement and nucleophilic addition reaction. The reaction uses naturally abundant organic carboxylic acids as carbon sources, readily prepared azidoformates as the nitrogen sources, and 4-dimethylaminopyridine (DMAP) and Cu(OAc)(2) as catalysts with as low as 0.1 mol % loading, providing protected alkyl, alkenyl and aryl amines in high yields with gaseous N-2 and CO2 as the only byproducts. Examples are demonstrated of the late-stage functionalization of natural products and drug molecules, stereospecific synthesis of useful alpha-chiral alkyl amines, and rapid construction of different ureas and primary amines.
SDS of cas: 385-00-2. About 2,6-Difluorobenzoic acid, If you have any questions, you can contact Zhang, YP; Ge, X; Lu, HJ; Li, GG or concate me.
Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com