Substituent effects in the intramolecular inverse electron demanddeils-alder reactions of 5-(p-substituted phenyl)-2-(1,1-dicyanopent-4-yn-1-yl)pyrimidines.
Substituent effects in the intramolecular inverse electron demanddeils-alder reactions of 5-(p-substituted phenyl)-2-(1,1-dicyanopent-4-yn-1-yl)pyrimidines.