ChemInform Abstract: Synthesis of 1,3‐Dihydrofuro(3,4‐c)pyridines and 5,7‐Dihydrofuro(3,4‐b)pyridines by Intramolecular Diels‐Alder Reactions of Pyrimidines. Investigation of the Effect of Steric Interactions on the Reaction Rate.

Abstract The intramolecular Diels‐Alder reaction of the title pyrimidines (I) or (V) gives rise to the dihydrofuropyridines (III) or (VII).