Nickel-Catalyzed C–H/C–O Coupling of Azoles with Phenol Derivatives
作者:Kei Muto、Junichiro Yamaguchi、Kenichiro Itami
DOI:10.1021/ja210249h
日期:2012.1.11
The first nickel-catalyzed C-H bond arylation of azoles with phenol derivatives is described. The new Ni(cod)(2)/dcype catalytic system is active for the coupling of various phenol derivatives such as esters, carbamates, carbonates, sulfamates, triflates, tosylates, and mesylates. With this C-H/C-O biaryl coupling, we synthesized a series of privileged 2-arylazoles, including biologically active alkaloids. Moreover, we demonstrated the utility of the present reaction for functionalizing estrone and quinine.
METHOD FOR PRODUCING PHENYL-SUBSTITUTED HETEROCYCLIC DERIVATIVE
申请人:National University Corporation Nagoya University
公开号:EP2774923B1
公开(公告)日:2016-05-18
An Iron and Copper System Catalyzed C–H Arylation of Azoles with Arylboronic Acids
作者:Song-Lin Zhang、Wei-Ye Hu、Pei-Pei Wang
DOI:10.1055/s-0034-1379073
日期:——
An efficient, environmentally friendly, and economical new method for arylation reactions of azoles with arylboronic acids via copper-iron-catalyzed C-H and C-B bond activation has been developed. The protocol tolerates a series of functional groups, such as methoxy, nitro, cyano, chloro, and trifluoromethyl groups.
Nickel-Catalyzed Direct Arylation of Azoles with Aryl Bromides
Nickel catalyst systems for the direct C2 arylation of oxazoles and thiazoles have been developed. The catalyst systems are cost-efficient and allow the use of various aryl bromides in the C-H arylation of azoles.