반응 #52056

반응 방정식

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

용매

n-butanol

반응 조건

후처리

1. 1
   온도refluxed for 10 hrs
2. 2
   기타n-Butanol was evaporated
3. 3
   기타reaction mixture
4. 4
   세척was washed with distilled water
5. 5
   추출extracted with dichloromethane (10 mL)
6. 6
   건조Organic layer was dried over sodium sulfate
7. 7
   기타evaporated
8. 8
   기타compound was purified by column chromatography

실험 절차

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.

출처