Arylmethylenemalononitrile and conjugate nitroalkenes, being markedly electron deficient, are versatile Michael acceptors for conjugated addition with various compounds containing acidic hydrogen atoms. In majority of reactions the Michael adducts are reactive intermediates that undergo spontaneous cyclization to carbo- [l] or heterocyclic [Z, 31 compounds.Recently we have published the efficient synthesis of various heterocyclic systems that consisted in reactions of arylmethylenemalononitriles with carbanions derived from benzoyl(thioacetani1ide) [4], 1-H-benzimidazole-2-acetonitrile [S] and 1-0x0-cycloalkano-2-carbothioic acid anilides [6]. Continuing our study on application of P-keto acid anilides to the synthesis of heterocyclic compounds we report in this work the results of reactions of 1-0x0-indano-(1) and 1-oxo-1,2,3,4tetrahydronaphthalene-(2) carbothioic acid anilides with benzylidenemalononitrile 3 and (E) p-nitrostyrene (9).

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