反応 #1435701

反応方程式

piperidine

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

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

→

target compound

収率 50.0%

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

収率 50.0%

溶媒

ethanol

反応条件

後処理

1. 1
   workup.ADDITIONwas added
2. 2
   温度The reaction solution was heated for 24 hours
3. 3
   温度while refluxing
4. 4
   温度After cooling the reaction solution
5. 5
   ろ過the precipitated red solid was filtered
6. 6
   その他recrystallized with ethanol

実験手順

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%).

出典