Palladium catalyzed C5-arylation of 2-fused triazole substituted thiophene and furan using aryl iodide through C H activation strategy
摘要:
Pd-catalyzed arylation of 2-fused triazole substituted thiophene and furan using aryl iodide through C-H activation is reported. It is found that the arylation occurs selectively at C-5 position of the thiophene and furan. Moreover, the nitrogens in the fused 1,2,4-thazole core were assisting neither N-directed arylation nor arylation in the triazole. (C) 2014 Elsevier B.V. All rights reserved.
Pd-catalyzed oxidative C–H arylation of heterocycle embedded thiophene/furan with aryl boronic acid/ester
作者:R. Srinivasan、R. Senthil Kumaran、N. S. Nagarajan
DOI:10.1039/c4ra06055e
日期:——
Palladium catalyzed oxidative C–H arylation of heterocycle embedded thiophenes with aryl boronic acids is described. This method is found to display high C5-selectivity and thus enabled rapid access to 2,5-disubstituted thiophenes. Furan analogs also exhibited a similar selectivity.