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

HRID 61999ノート

反応式

HRID 61999 の反応式
[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]

参加物

5

反応物 3

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

生成物 1

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

試薬・触媒・溶媒 1

HCID 1049Pyridine溶媒

反応条件

温度
70 °C

実験手順

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 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/ispropanol to give crude ethyl 4-(3,4-dimethoxy-5-nitrophenyl)-2-(2-(trifluoromethyl)pyridin-3-yl)furan-3-carboxylate, 1.00 g (43%).

後処理

  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/ispropanol

出典と根拠

ORDレコード
ord-1c390971cf3041ef9c91dbc576b32bf9
出典データセット
uspto-grants-2016_09
特許番号
US09446012B2

反応ノート

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