METHYLQUINAZOLIN-4-YLIDENECYANOACETIC ACID ETHYL ESTER

From a theoretical point of view, the 2,4-substituted quinazolines studied by us canexist in three (A, B, C) interconvertible tautomeric forms, and the reaction productcan be one of the most stable forms or a mixture of tautomers [1].In addition, for theB and C forms, one can write two geometric isomers, respectively, B' and C':

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