Scheme 10.
Condensation reaction between nitriles 14 and 15 and (hetero)aromatic nitro compounds 17, 22–24 forming heterocyclic analogues 20, 25 (a,b), heteroatom containing 26 (c), and bi(carbo)cyclic 27 (d) heteroarylcyanomethylenequinone oximes.
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