R. Troschutz et L. Grun, ON THE REACTION OF O-FUNCTIONAL BENZYLMAL ONONITRILES WITH N-BISNUCLEOPHILES AS WELL AS ALCOHOLATES, Archiv der pharmazie, 326(11), 1993, pp. 865-869
The o-functional benzylmalononitriles 1, 16 and 22 show different reac
tivity towards N-bisnucleophiles and alcoholates. 16 and 22 cyclize wi
th guanidine to the pyrimidinetriamines 17 and 23 only while compound
1 provides 4 by a twofold ring closure. L reacts with hydrazine and et
hylendiamine to afford the 2-benzazepines 7 and 12, respectively. Refl
uxing compound 22 with Na-methylate or Na-ethylate, respectively, lead
s to the 2-benzazepine-cyanoenolether 26a,b. Analogous reactions with
16 did nor succeed in cyclization.