Koeckritz, Peter; Sattler, Ruth; Liebscher, Juergen published an article in 1985, the title of the article was Iminoformylation reaction of substituted crotononitriles. I. Synthesis of new N,N-disubstituted 4-amino-1,1-dicyanobuta-1,3-dienes.Product Details of 2510-01-2 And the article contains the following content:
Condensation of H2CRCR1:C(CN)2 [R = H, Me; R1 = e.g. Et, Ph, 2-thienyl; RR1 = e.g. (CH2)4] with R2R3NH [R2 = alkyl, Ph; R3 = R2, PhCH2, cyclohexyl; R2R3 = (CH2)4, (CH2)5, (CH2)2O(CH2)2] and (EtO)3CH in the presence of carboxylic acids as catalysts gave ∼70 title compounds R2R3NCH:CRCR1:C(CN)2 in moderate to good yields depending on steric conditions. The experimental process involved the reaction of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile(cas: 2510-01-2).Product Details of 2510-01-2
The Article related to crotononitrile iminoformylation orthoformate amine, carboxylic acid iminoformylation catalyst, butadiene aminodicyano, Aliphatic Compounds: Nitriles, Isonitriles, and Acyl Cyanides and other aspects.Product Details of 2510-01-2
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts