Реакция #1435701

Уравнение реакции

piperidine

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

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

→

target compound

Выход 50.0%

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

Выход 50.0%

Растворители

ethanol

Условия реакции

Обработка

1. 1
   workup.ADDITIONwas added
2. 2
   ТемператураThe reaction solution was heated for 24 hours
3. 3
   Температураwhile refluxing
4. 4
   ТемператураAfter cooling the reaction solution
5. 5
   Фильтрацияthe precipitated red solid was filtered
6. 6
   Другоеrecrystallized with ethanol

Методика

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%).

Источник