tert-Butanol → Tert-butyl 2,4-hexadienyl 4-(3-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

HRID 652427노트

반응식

HRID 652427 반응식
[CH2:1]([O:7][C:8]([C:10]1[CH:15]([C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([N+:22]([O-:24])=[O:23])[CH:17]=2)[C:14]([C:25]([OH:27])=[O:26])=[C:13]([CH3:28])[NH:12][C:11]=1[CH3:29])=[O:9])[CH:2]=[CH:3][CH:4]=[CH:5][CH3:6].[C:30](O)([CH3:33])([CH3:32])[CH3:31].C1(N=C=NC2CCCCC2)CCCCC1>CN(C)C1C=CN=CC=1.ClC(Cl)C>[N+:22]([C:18]1[CH:17]=[C:16]([CH:15]2[C:10]([C:8]([O:7][CH2:1][CH:2]=[CH:3][CH:4]=[CH:5][CH3:6])=[O:9])=[C:11]([CH3:29])[NH:12][C:13]([CH3:28])=[C:14]2[C:25]([O:27][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:26])[CH:21]=[CH:20][CH:19]=1)([O-:24])=[O:23]

참가 물질

6

반응물 3

HCID 6386tert-ButanolHCID 10868DicyclohexylcarbodiimideHCID 727405614-(3-Nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid mono (2,4-hexadienyl) ester

생성물 1

HCID 73189303Tert-butyl 2,4-hexadienyl 4-(3-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate수율 73.1%

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매HCID 63651,1-Dichloroethane용매

실험 절차

199 mg (0.5 mM) of 4-(3-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid mono (2,4-hexadienyl) ester, 44 mg (0.6 mM) of tert-butanol, 113 mg (0.55 mM) of dicyclohexylcarbodiimide and 61 mg (0.5 mM) of 4-dimethylaminopyridine were dissolved in 5 ml of dichloroethane, and refluxed for 2 hours. After the reaction mixture was chilled, insoluble matters were filtered off. The solvent was evaporated under reduced pressure, and the residue was purified by silicas gel column chromatography to obtain 198 mg of a crude material. This material was recrystallized with methanol, and 166 mg of tert-butyl 2,4-hexadienyl 4-(3-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate was obtained (yield 73%).

후처리

  1. temperaturerefluxed for 2 hours
  2. temperatureAfter the reaction mixture was chilled
  3. filtrationinsoluble matters were filtered off
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silicas gel column chromatography
  6. customto obtain 198 mg of a crude material
  7. customThis material was recrystallized with methanol

출처 및 근거

ORD 기록
ord-04e3f2ab8c0246c98eb0cd575d3ba630
출처 데이터셋
uspto-grants-1987_06
특허 번호
US04672068

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