W. Winnik, REACTIONS OF POLYFUNCTIONAL AMINES WITH -4-(ANILINOTHIOMETHYLIDENE)-2-CYANO-2-PENTENEDIOIC ACID DIETHYL ESTER, Journal of heterocyclic chemistry, 32(2), 1995, pp. 477-482
-4-(anilinothiomethylidene)-2-cyano-2-pentenedioic acid diethyl ester
reacts with ethylenediamine, 1,3-propylenediamine and 1,4-butylenediam
ine affording bicyclic cyclocondensation products. The title compound
reacts with diethyrenetriamine and 2-(2-aminoethylamino)ethanol to giv
e new seven membered ring tricyclic compounds. The mechanism for these
reactions is discussed.