Reacción #52056

Ecuación de reacción

2-Ethoxy-6-pentadecyl benzaldehyde

ethyl acetoacetate

Acetic acid

piperidine

Ethyl-3-amino crotonate

→

diethyl 1,4-dihydro-4-(2′-ethoxy-6′-pentadecyl phenyl)-2,6-dimethyl-3,5-pyridine dicarboxylate

Disolventes

n-butanol

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturarefluxed for 10 hrs
2. 2
   Otron-Butanol was evaporated
3. 3
   Otroreaction mixture
4. 4
   Lavadowas washed with distilled water
5. 5
   Extracciónextracted with dichloromethane (10 mL)
6. 6
   SecadoOrganic layer was dried over sodium sulfate
7. 7
   Otroevaporated
8. 8
   Otrocompound was purified by column chromatography

Procedimiento

2-Ethoxy-6-pentadecyl benzaldehyde (3 g, 8.3 mmol) and ethyl acetoacetate (1.08 g, 8.3 mmol) were dissolved in n-butanol (20 mL). Acetic acid (0.5 g, 8.3 mmol) and piperidine (0.7 g, 8.3 mmol) were added and stirred at room temperature for 3-4 hrs. Ethyl-3-amino crotonate (1.08 g, 8.3 mmol) was then added and refluxed for 10 hrs. n-Butanol was evaporated and reaction mixture was washed with distilled water and extracted with dichloromethane (10 mL). Organic layer was dried over sodium sulfate, evaporated and compound was purified by column chromatography using silicagel (100-200 mesh) with hexane:EtOAc (94:6) solvent system to give diethyl 1,4-dihydro-4-(2′-ethoxy-6′-pentadecyl phenyl)-2,6-dimethyl-3,5-pyridine dicarboxylate as white powder.

Fuente