Water → Tert-butyl 4-[4-(2,4-dichlorophenyl)-1,3-thiazol-2-yl]piperazine-1-carboxylate

HRID 2263327노트

반응식

HRID 2263327 반응식
Br[C:2]1[S:3][CH:4]=[C:5]([C:7]2[CH:12]=[CH:11][C:10]([Cl:13])=[CH:9][C:8]=2[Cl:14])[N:6]=1.[N:15]1([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:20][CH2:19][NH:18][CH2:17][CH2:16]1.C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[Cl:14][C:8]1[CH:9]=[C:10]([Cl:13])[CH:11]=[CH:12][C:7]=1[C:5]1[N:6]=[C:2]([N:18]2[CH2:17][CH2:16][N:15]([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:20][CH2:19]2)[S:3][CH:4]=1

참가 물질

6

반응물 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 143452tert-Butyl piperazine-1-carboxylateHCID 687803052-Bromo-4-(2,4-dichlorophenyl)thiazole

생성물 1

HCID 68776393Tert-butyl 4-[4-(2,4-dichlorophenyl)-1,3-thiazol-2-yl]piperazine-1-carboxylate수율 25%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

A solution of 2-bromo-4-(2,4-dichlorophenyl)-1,3-thiazole (6.89 g, 22.3 mmol), tert-butyl piperazine-1-carboxylate (8.31 g, 44.6 mmol) and potassium carbonate (3.08 g, 22.3 mmol) in dimethylformamide (70 ml) was stirred at 120° C. for 13 hours. Water was poured to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with water, and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1) to give 2.31 g (25.0%) of the desired product as a solid.

후처리

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1)

출처 및 근거

ORD 기록
ord-a07e2659b9e24f5eb26893037a08256c
출처 데이터셋
uspto-grants-2010_12
특허 번호
US07851473B2

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