Reaktion #172421

Reaktionsgleichung

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

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

ammonium acetate

→

brown powdered crystal

Ausbeute 75.1%

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

Ausbeute 75.1%

Lösungsmittel

ethanol

tetrahydrofuran

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvent was evaporated off
2. 2
   Waschenthe residue was washed with ethanol

Vorschrift

In 10 ml of ethanol and 3 ml of tetrahydrofuran were dissolved 300 mg (0.81 mmol) of 5-[2-(4-dibutylamino-2-methoxyphenyl)vinyl]thiophene-2-carboaldehyde and 177 mg (0.89 mmol) of 2-(3-cyano-4,5,5-trimethyl-2(5H)-furanylidene)propanedinitrile. To this mixture was added 63 mg of ammonium acetate, and the mixture was stirred at room temperature for 24 hours and further at 50° C. for 2.5 hours. The solvent was evaporated off and the residue was washed with ethanol to give 335 mg of a brown powdered crystal (yield: 75.1%; mp: 191-192° C.)

Quelle