Chemical properties of pyrimidoquinoxaline 6-oxides
作者:Ma. Beatriz García、Liliana R. Orelli、Isabel A. Perillo
DOI:10.1002/jhet.5570430644
日期:2006.11
The reactivity of some representative 5-arylpyrimidoquinoxaline 6-oxides 1 was investigated. Reduction with sodium borohydride afforded the corresponding N-deoxy compounds 2. Reaction with methyl iodide in excess led selectively to N-methyl derivatives 3. The preference for N vs. O-alkylation is analyzed considering electronic effects. Alkaline hydrolysis of compounds 1 involved initial nucleophilic