2-(3-Cyano-4-methyl-5-phenyl-5-(trifluoromethyl)furan-2(5H)-ylidene)malononitrile → 2-[4-[2-[4-[2-(4-dibutylamino-2-methoxyphenyl)vinyl]-2,5-dimethylphenyl]vinyl]-3-cyano-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene]propanedinitrile

Participants

Reaction Conditions

Reaction Steps

In 9 ml of ethanol and 3 ml of tetrahydrofuran were dissolved 400 mg (1.02 mmol) of 4-[2-(4-dibutylamino-2-methoxyphenyl) vinyl]-2,5-dimethylbenzaldehyde and 360 mg (1.14 mmol) of 2-(3-cyano-4-methyl-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene)propanedinitrile. The mixture was stirred at 70° C. for 2 hours. The solvent was evaporated off and the residue was washed with ethanol. The residue was purified by silica gel column chromatography to give 441 mg of a black powder (yield: 62.8%; mp: 177-179° C.)

Provenance & Evidence