D.V. Dar’in, А.Yu. Ivanov, P.S. Lobanov
“Cyclocondensation of Ethyl (imidazolidine-2-ylidene)acetate with Aromatic Esters Bearing Labile Halogen in ortho-Position”
J. Hetercyclic Chem., 2015, 52, 1192-1194
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.