Synthesis of 7-cycloalkylimino substituted 3-amino-6-fluoro-2-methyl-3H-quinazolin-4-ones
作者:Emiliya V. Nosova、Galina N. Lipunova、Pavel A. Slepukhin、Valery N. Charushin
DOI:10.1016/j.jfluchem.2012.10.003
日期:2013.1
A versatile pathway for the synthesis of 7-cycloalkylimino substituted 3-amino-6-fluoro-2-methyl-3H-quinazolin-4-ones from 4,5-difluoroanthranylic acid has been advanced. Nucleophilic amination-defluorination reaction of the 6,7-difluoro derivative of 3-amino-2-methyl-3H-quinazolin-4-one has been established to occur at position 7, as shown by X-ray crystallographic analysis. (c) 2012 Elsevier B.V. All rights reserved.