Rhodium(III)-Catalyzed <i>ortho</i>-Alkylation of Phenoxy Substrates with Diazo Compounds via C–H Activation: A Case of Decarboxylative Pyrimidine/Pyridine Migratory Cyclization Rather than Removal of Pyrimidine/Pyridine Directing Group
作者:Manjula Ravi、Srinivasarao Allu、K. C. Kumara Swamy
DOI:10.1021/acs.joc.6b02693
日期:2017.3.3
possessing the ester functionality undergo decarboxylative pyrimidine/pyridine migratory cyclization (rather than deprotection of pyrimidine/pyridine group) using 20% NaOEt in EtOH affording a novel class of 3-(pyrimidin-2(1H)-ylidene)benzofuran-2(3H)-ones and 6-methyl-3-(pyridin-2(1H)-ylidene)benzofuran-2(3H)-one. The ortho-alkylated phenoxypyridine possessing ester functionality also undergoes decarboxylative