C. Orlewska et al., On the reaction between 1-aza-1,3-dienes and push-pull olefins of the acyloxymethylidene-malononitrile type, MONATS CHEM, 131(8), 2000, pp. 889-893
The reaction between push-pull olefins of the acyloxymethyiidene-malononitr
ile type and alpha,beta-unsaturated hydrazones affords selectively 5-alkyl-
2-cyano-6-(N',N'-dimethylhydrazono)-hexa-2,4-dienenitriles. No [4+2]-cycloa
ddition products were detected. The structure elucidation of the obtained c
ompounds and possible reaction mechanisms are discussed.