H. Abdelghany et al., SYNTHESIS OF PYRROLE, PYRIDINONE AND PYRIMIDINONE DERIVATIVES USING PTC CONDITIONS, Synthetic communications, 25(8), 1995, pp. 1119-1131
The reaction of anilinomethylenemalononitrile 1 or 1,4-di(malononitril
emethyleneamino)benzene 7 with some reactive halo compounds in a one-p
ot reaction under PTC conditions affords a new series of pyrrole and p
yridinone compounds. The reaction of compounds 1 or 7 with ethyl chlor
oformate gives the corresponding esters which underwent cyclization on
reaction with different amino compounds affording the pyrimidinone de
rivatives.