[3-Cyano-4,5-dimethyl-5-(trifluoromethyl)furan-2(5H)-ylidene]malononitrile → HCID 86667581, compound

Participants

Reaction Conditions

Reaction Steps

In 8 ml of ethanol were dissolved 230 mg (0.58 mmol) of 5-[4-(4-dibutylamino-2-methoxyphenyl)-1,3-butadienyl]thiophene-2-carboaldehyde and 160 mg (0.63 mmol) of 2-(3-cyano-4,5-dimethyl-5-trifluoromethyl-2(5H)-furanylidene) propanedinitrile. After the mixture was stirred with heating at 50° C. for 2 hours, the product was separated by filtration and washed with ethanol. The product was purified by silica gel column chromatography to give 279 mg of a black crystal (yield: 76.2%; mp: 161-162° C.)

Provenance & Evidence