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.
Palladium-Catalyzed Direct Arylation of Heteroarenes with Aryl Mesylates
作者:Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1002/chem.201002354
日期:2011.1.17
Not so challenging after all! The first general examples of the directarylation of heteroarenes by using challenging aryl mesylates as electrophiles are disclosed. These easy reaction conditions also allow the functionalization of other heterocycles, such as caffeine, triazole and benzathiazole (see scheme).