ChemInform Abstract: Cyclocondensation of Ethyl (Imidazolidine-2-ylidene)acetate with Aromatic Esters Bearing Labile Halogen in ortho-Position

Cyclocondensation of ethyl (imidazolidine-2-ylidene)acetate with aromatic esters bearing labile halogen in ortho-position leads to fused heterocycles, which is formed by substitution of halogen atom with α-carbon atom of cyclic ketene aminal and binding of nitrogen atom with carbonyl carbon atom of aromatic ester.