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.
用多磷酸处理 3-羟基-3-(3-吡啶基)丁-2-酮腙得到 1-氨基-2,3-二甲基-1H-吡咯并[2,3-b]吡啶。与相同酮的 2,4-二硝基苯腙的类似反应产生 1-(2,4-二硝基苯基)-3-甲基-4-(3-吡啶基)吡唑。