Reaktion #1435701

Reaktionsgleichung

piperidine

2-(2-tert-butyl-6-methyl-pyran-4-ylidene)-malononitrile

5-(4-diphenylamino-phenyl)-thiophene-2-carbaldehyde

→

target compound

Ausbeute 50.0%

2-(2-tert-butyl-6-{2-[5-(4-diphenylamino-phenyl)-thiophene-2-yl]-vinyl}-pyran-4-ylidene)-malononitrile

Ausbeute 50.0%

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwas added
2. 2
   TemperaturThe reaction solution was heated for 24 hours
3. 3
   Temperaturwhile refluxing
4. 4
   TemperaturAfter cooling the reaction solution
5. 5
   Filtrationthe precipitated red solid was filtered
6. 6
   Sonstigerecrystallized with ethanol

Vorschrift

As shown in the following reaction 3, 0.72 g (3.37 mmol) of (2-(2-tert-butyl-6-methyl-pyran-4-ylidene)-malononitrile and 1 g (2.81 mmol) of 5-(4-diphenylamino-phenyl)-thiophene-2-carbaldehyde were added into 50 ml of ethanol, and 0.28 g (3.37 mmol) of piperidine was added thereto. The reaction solution was heated for 24 hours while refluxing. After cooling the reaction solution, the precipitated red solid was filtered, and recrystallized with ethanol to obtain 0.79 g of the target compound (Yield 50%).

Quelle