Palladium–copper-catalyzed desulfitative amination of benzo[d]oxazole C–H bond
摘要:
An efficient palladium-copper-catalyzed direct C-H amination of substituted benzoxazoles with various sulfamoyl chlorides as nitrogen group sources has been developed. The system does not need a strong base and tolerates a series of functional groups, such as chloro, methyl, and nitro groups, providing the amination products in moderate to excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.
Direct Copper-Catalyzed C-H Monofluoroalkylation of Benzoxazoles with 1-Fluoro-1-haloalkanes
作者:Wei Li、Andrii Varenikov、Mark Gandelman
DOI:10.1002/ejoc.201901929
日期:2020.6.8
Copper‐catalyzed cross‐coupling reaction allowed the first directC–Hmonofluoroalkylation of benzoxazole with 1‐fluoro‐1‐haloalkanes, which bear β‐hydrogens and no directing groups in vicinity to the reaction center.
The palladium-catalyzed tandem decarboxylation, carbon–carbon triple bond oxidation and decarbonylative arylation of the benzoxazole C–H bond
作者:Dongfang Liu、Bin Liu、Jiang Cheng
DOI:10.1039/c3ra41185k
日期:——
A palladium-catalyzed arylation of benzoxazole has been developed. This protocol involves the tandem decarboxylation and oxidation of a carbonâcarbon triple bond followed by decarbonylative arylation of the benzoxazole CâH bond.
A Ni‐catalyzed C−F bond functionalization of unactivated arylfluorides with oxazoles as coupling partners was developed. Various arylated oxazoles could be obtained in moderate to good yields in the presence of Ni(cod)2/IMes catalytic system. A rapid synthesis of natural product texaline was also demonstrated using this protocol. This transformation could be potentially utilized in regioselective