Chelating palladium complexes containing pyridine/pyrimidine hydroxyalkyl di-functionalized N-heterocyclic carbenes: synthesis, structure, and catalytic activity towards C–H activation
作者:Liangru Yang、Jinwei Yuan、Pu Mao、Qi Guo
DOI:10.1039/c5ra21183b
日期:——
novel chelating palladium complexes containing pyridine/pyrimidine hydroxyalkyl di-functionalized N-heterocyclic carbenes (NHCs) via direct metallation of the precursor imidazolium salts is presented. The structure has been characterized unambiguously by X-ray single crystal analysis. Catalytic activity investigation showed that the complexes catalyse the direct C–H bond arylation of (benzo)oxazoles efficiently
Palladium-catalyzed direct arylation of benzoxazoles with unactivated simple arenes
作者:Ge Wu、Jun Zhou、Min Zhang、Peng Hu、Weiping Su
DOI:10.1039/c2cc34238c
日期:——
Using CuBr(2) as an additive, the Pd-catalyzed intermolecular C-H-C-H cross-coupling between benzoxazoles and unactivated simple arenes has been developed. This protocol provides a straightforward approach for the biological activity of 2-arylbenzoxazole derivatives.