Facile and Convenient Syntheses of Fluorine-Containing Pyrido(2,3-h)-quinazolines and 1,7-Phenanthrolines by Condensation Reactions of 6,8-Bis(trifluoroacetyl)quinoIin-5-amine with Carbonyl Compounds

摘要

6,8-Bis(trifluoroacetyl)quinolin-5-amine reacted easily with various aldehydes in the presence of aqueous ammonia to afford trifluoromethylated pyrido[2,3-h]quinazoline derivatives and 1,7-phenanthroline derivatives in good to excellent yields. Under almost the same conditions, the use of ketones instead of aldehydes gave 1,7-phenanthroline derivatives selectively, except in the case of cyclohexanone.