Ru(II)-catalyzed ortho-amidation and decarboxylation of aromatic acids: a versatile route to meta-substituted N-aryl benzamides

Autor: Xue-Fen Dong, Xian-Ying Shi, Chao-Jun Li, Juan Fan, Ke-Yan Liu, Junfa Wei
Rok vydání: 2015
Předmět:
Zdroj: Science China Chemistry. 58:1286-1291
ISSN: 1869-1870
1674-7291
Popis: Carboxylate as a promising and valuable directing group has attracted a great deal of attention. However, employing it as a traceless direction group has rarely been reported. We developed the ruthenium-catalyzed amidation of substituted benzoic acids with isocyanates via directed C-H functionalization followed by decarboxylation to afford the corresponding meta- substituted N -aryl benzamides, in which the carboxylate serves as a unique, removable directing group. Notably, this protocol can provide an efficient alternative to access meta -substituted N -aryl benzamides, which are much more difficult to prepare than ortho -substituted analogues.
Databáze: OpenAIRE