C. Azimi, S. Majidi
Jun 26, 2014
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Journal
Oriental journal of chemistry
Abstract
propionyl-3-(4-Substitutedphenylamino)isoxazol-5(2H)-ones, substituted on nitrogen with a 2-chloro-5-nitropyridine group, react with triethylamine (TEA) to give imidazo (1,2-a)pyridines and indoles. With 4-bromophenyl and 4-methylphenyl group substituents only imidazopyridines are formed, but the 4-methoxyphenyl derivative gave a 3:1 mixture of the corresponding imidazo(1,2- a)pyridine and 2-pyridylaminoindole, respectively.