A Facile and Convenient Synthetic Method for Fluorine-containing 1,2-Dihydropyrido[3,2-h]quinazolines and Pyrido[3,2-h]quinazolines
摘要:
5,7-Bis(trifluoroacetyl)-8-quinolylamine (1) reacted with various aliphatic and aromatic aldehydes in the presence of aqueous ammonia to afford fluorine-containing 1,2-dihydropyrido[3,2-h] quinazolines (2) and pyri do [3,2-h]quinazoline-6-methanols (3) in moderate to high yields. Dehydrogenation of 2 with DDQ gave the corresponding pyrido-[3,2-h]quinazolines (4) in excellent yields. Conversion of alcohols (3) into hydrates (4) with DDQ was also successful.
A Simple and Efficient Synthetic Method for Fluorine-Containing 1,10-Phenanthrolines
作者:Etsuji Okada、Norikado Tsukushi
DOI:10.1055/s-2000-6359
日期:——
Various fluorine-containing 1,10-phenanthrolines were synthesized in excellent yields by the reaction of 5,7-bis(trifluoroacetyl)-8-quinolylamine with ketones in the presence of aqueous ammonia.