Novel routes to N-amino-1H-pyrrolo[2,3-b]pyridines from α-hydroxyarylalkyl ketones and hydrazines
作者:Yu. B. Chudinov、S. B. Gashev、S. I. Firgang、V. V. Semenov
DOI:10.1007/s11172-007-0252-4
日期:2007.8
Treatment of 3-hydroxy-3-(3-pyridyl)butan-2-one hydrazone with polyphosphoric acid gave 1-amino-2,3-dimethyl-1H-pyrrolo[2,3-b]pyridine. An analogous reaction with 2,4-dinitrophenylhydrazone of the same ketone yielded 1-(2,4-dinitrophenyl)-3-methyl-4-(3-pyridyl)pyrazole.