Reaction #172422

Reaction equation

5-[2-(4-dibutylamino-2-methoxyphenyl)vinyl]thiophene-2-carboaldehyde

2-(3-cyano-4,5-dimethyl-5-trifluoromethyl-2(5H)-furanylidene)propanedinitrile

→

brown powdered crystal

Yield 73.5%

2-[4-[2-[5-[2-(4-dibutylamino-2-methoxyphenyl)vinyl]thiophene-2-yl]vinyl]-3-cyano-5-methyl-5-trifluoromethyl-2(5H)-furanylidene]propanedinitrile

Yield 73.5%

Solvents

ethanol

tetrahydrofuran

Conditions

Workup

1. 1
   Otherthe solvent was evaporated off
2. 2
   WashThe residue was washed with ethanol

Procedure

In 4 ml of ethanol and 1.5 ml of tetrahydrofuran were dissolved 100 mg (0.27 mmol) of 5-[2-(4-dibutylamino-2-methoxyphenyl)vinyl]thiophene-2-carboaldehyde and 75 mg (0.3 mmol) of 2-(3-cyano-4,5-dimethyl-5-trifluoromethyl-2(5H)-furanylidene)propanedinitrile. After the mixture was stirred at 50° C. for 2 hours, the solvent was evaporated off. The residue was washed with ethanol to give 120 mg of a brown powdered crystal (yield: 73.5%; mp: 191-193° C.)

Source