With molybdenum hexacarbonyl as the carbon monoxide source, a general palladium‐catalyzed carbonylative transformation of the C−H bond on aromatic rings to produce esters has been developed. Good yields of the corresponding products have been obtained with wide functional group tolerance and excellent regioselectivity. A variety of aliphatic alcohols are suitable reactants here.
Rhodium-Catalyzed Direct Oxidative Carbonylation of Aromatic C−H Bond with CO and Alcohols
作者:Zheng-Hui Guan、Zhi-Hui Ren、Stephen M. Spinella、Shichao Yu、Yong-Min Liang、Xumu Zhang
DOI:10.1021/ja807167y
日期:2009.1.21
A general protocol for the rhodium-catalyzedoxidative carbonylation of arenes to form esters has been developed. A broad substrate scope has been demonstrated allowing carbonylation of electron-rich, electron-poor, and heterocyclic arenes, and the reaction shows wide functional group tolerance and excellent regioselectivities. Up to 96% yield of ortho-substituted aryl or heteroaryl carboxylic esters
Palladium-Catalyzed Direct Alkoxycarbonylation of Aromatic CH Bonds<i>via</i>Selective CC Cleavage of α-Keto Esters
作者:Wei Zhou、Pinhua Li、Yicheng Zhang、Lei Wang
DOI:10.1002/adsc.201300436
日期:2013.8.12
AbstractA novel palladium‐catalyzed direct alkoxycarbonylation of 2‐arylpyridines, 2‐arylquinolines, benzo[h]quinolines, 2‐phenylpyrimidines, N‐pyrimidine pyrroles and N‐pyrimidine indoles via aromatic CH bond activation and selective CC cleavage of α‐keto esters has been developed. The method has the advantages of wide functional group tolerance, high selectivity, broad range of substrates and good yields.magnified image