Réaction #1435701

Équation de réaction

piperidine

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

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

→

target compound

Rendement 50.0%

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

Rendement 50.0%

Solvants

ethanol

Conditions de réaction

Traitement

1. 1
   workup.ADDITIONwas added
2. 2
   TempératureThe reaction solution was heated for 24 hours
3. 3
   Températurewhile refluxing
4. 4
   TempératureAfter cooling the reaction solution
5. 5
   Filtrationthe precipitated red solid was filtered
6. 6
   Autrerecrystallized with ethanol

Mode opératoire

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%).

Source