Direct synthesis of 2, 4??diaminoquinazolines from 2??fluorobenzonitriles

JB Hynes, A Pathak, CH Panes…

文献索引：Hynes, John B.; Pathak, Alpana; Panos, Constantina H.; Okeke, Claudia C. Journal of Heterocyclic Chemistry, 1988 , vol. 25, p. 1173 - 1177

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被引用次数: 24

摘要

Abstract In a search for new methods for preparing 2, 4-diaminoquinazolines having a diversity of substituents in the benzenoid ring, it was found that the reaction of 2, 6- difluorobenzonitrile with guanidine carbonate gave 2, 4-diamino-5-fluoroquinazoline in excellent yield. Extension of this approach to other 2-fluorobenzonitriles, some of which were elaborated for the first time, showed that this reaction possesses considerable ...