Hydrochloric Acid → Ethyl 4-(3,4-dimethoxy-5-nitrophenyl)-2-(2-(trifluoromethyl)pyridin-3-yl)furan-3-carboxylate

HRID 42654노트

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HRID 42654 반응식
[O:1]=[C:2]([C:9]1[C:10]([C:15]([F:18])([F:17])[F:16])=[N:11][CH:12]=[CH:13][CH:14]=1)[CH2:3][C:4]([O:6][CH2:7][CH3:8])=[O:5].Br[CH2:20][C:21]([C:23]1[CH:28]=[C:27]([N+:29]([O-:31])=[O:30])[C:26]([O:32][CH3:33])=[C:25]([O:34][CH3:35])[CH:24]=1)=O.Cl>N1C=CC=CC=1>[CH3:35][O:34][C:25]1[CH:24]=[C:23]([C:21]2[C:3]([C:4]([O:6][CH2:7][CH3:8])=[O:5])=[C:2]([C:9]3[C:10]([C:15]([F:18])([F:16])[F:17])=[N:11][CH:12]=[CH:13][CH:14]=3)[O:1][CH:20]=2)[CH:28]=[C:27]([N+:29]([O-:31])=[O:30])[C:26]=1[O:32][CH3:33]

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 68702337HCID 68702337, 화합물HCID 714457912-Bromo-1-(3,4-dimethoxy-5-nitrophenyl)ethanone

생성물 1

HCID 68703891Ethyl 4-(3,4-dimethoxy-5-nitrophenyl)-2-(2-(trifluoromethyl)pyridin-3-yl)furan-3-carboxylate

시약·촉매·용매 1

HCID 1049Pyridine용매

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온도
70 °C

실험 절차

To a stirred solution of ethyl 3-oxo-3-(2-(trifluoromethyl)pyridin-3-yl)propanoate (1.305 g, 5 mmol) in pyridine (25 mL) was added 2-bromo-1-(3,4-dimethoxy-5-nitrophenyl)ethanone (1.67 g, 5.5 mmol). The reaction mixture was heated to 70° C. and to stirred for 5 hours, then cooled to room temperature and poured onto 6 N aqueous HCl (100 mL). The precipitate was filtered off, washed with water and dried over P2O5 under vacuum. The solid was recrystallised from dichloromethane/isopropanol to give crude ethyl 4-(3,4-dimethoxy-5-nitrophenyl)-2-(2-(trifluoromethyl)pyridin-3-yl)furan-3-carboxylate, 1.00 g (43%).

후처리

  1. temperaturecooled to room temperature
  2. filtrationThe precipitate was filtered off
  3. washwashed with water
  4. dry with materialdried over P2O5 under vacuum
  5. customThe solid was recrystallised from dichloromethane/isopropanol

출처 및 근거

ORD 기록
ord-c5954f0a8b4f4f11af65aa178ae1a0ac
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08536203B2

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