Reaktion #172429

Reaktionsgleichung

5-[2-(2-benzyloxy-4-dibutylaminophenyl)vinyl]thiophene-2-carboaldehyde

2-(3-cyano-4-methyl-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene)propanedinitrile

→

dark reddish brown crystal

Ausbeute 94.7%

2-[4-[2-[5-[2-(2-benzyloxy-4-dibutylaminophenyl)vinyl]thiophene-2-yl]vinyl]-3-cyano-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene]propanedinitrile

Ausbeute 94.7%

Lösungsmittel

ethanol

tetrahydrofuran

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGfurther stirred
2. 2
   Temperaturwith heating at 50° C. for 3 hours
3. 3
   SonstigeThe solvent was evaporated off
4. 4
   Waschenthe residue was washed with ethanol

Vorschrift

In 15 ml of ethanol and 5 ml of tetrahydrofuran were dissolved 730 mg (1.63 mmol) of 5-[2-(2-benzyloxy-4-dibutylaminophenyl)vinyl]thiophene-2-carboaldehyde and 573 mg (1.82 mmol) of 2-(3-cyano-4-methyl-5-phenyl-5-trifluoromethyl-2(5H)-furanylidene)propanedinitrile. The mixture was stirred at room temperature for 21 hours and further stirred with heating at 50° C. for 3 hours. The solvent was evaporated off and the residue was washed with ethanol to give 1.15 g of a dark reddish brown crystal (yield: 94.7%; mp: 196-197° C.)

Quelle