2-(3-Cyano-4-methyl-5-phenyl-5-(trifluoromethyl)furan-2(5H)-ylidene)malononitrile → 2-[4-[2-[5-[2-[2-benzyloxy-4-[butyl(4-hydroxybutyl)amino]phenyl]vinyl]thiophene-2-yl]vinyl]-3-cyano-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene]propanedinitrile

Participants

Reaction Conditions

Reaction Steps

In 8 ml of ethanol were dissolved 155 mg (0.33 mmol) of 5-[2-[2-benzyloxy-4-[butyl(4-hydroxybutyl)amino]phenyl]vinyl]thiophene-2-carboaldehyde and 116 mg (0.37 mmol) of 2-(3-cyano-4-methyl-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene]propanedinitrile. The mixture was stirred with heating at 65° C. for 1 hour. The tar-like matter was separated by decantation, purified by silica gel column chromatography, crystallized in methanol, and separated by filtration to give 153 mg of a dark brown crystal having amp of 181-183° C. (yield: 60.2%).

Provenance & Evidence