Potassium Phosphate, Tribasic → (S)-{1-[3-(4-pyridin-2-ylpiperazin-1-yl)phenyl]ethyl}carbamic acid tert-butyl ester

HRID 7591

반응식

HRID 7591 반응식
[C:1]([O:5][C:6](=[O:17])[NH:7][C@H:8]([C:10]1[CH:15]=[CH:14][CH:13]=[C:12](Br)[CH:11]=1)[CH3:9])([CH3:4])([CH3:3])[CH3:2].[N:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[N:24]1[CH2:29][CH2:28][NH:27][CH2:26][CH2:25]1.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>COCCOC.ClCCl.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[C:1]([O:5][C:6](=[O:17])[NH:7][C@H:8]([C:10]1[CH:15]=[CH:14][CH:13]=[C:12]([N:27]2[CH2:28][CH2:29][N:24]([C:19]3[CH:20]=[CH:21][CH:22]=[CH:23][N:18]=3)[CH2:25][CH2:26]2)[CH:11]=1)[CH3:9])([CH3:4])([CH3:3])[CH3:2]

참가 물질

7

반응물 3

HCID 62657Potassium Phosphate, TribasicHCID 944591-(2-Pyridyl)piperazineHCID 56971804(S)-N-Boc-1-(3-bromophenyl)ethylamine

생성물 1

HCID 58680161(S)-{1-[3-(4-pyridin-2-ylpiperazin-1-yl)phenyl]ethyl}carbamic acid tert-butyl ester수율 64.2%

시약·촉매·용매 3

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 6344Dichloromethane용매HCID 80711,2-Dimethoxyethane용매

실험 절차

A mixture of (S)-[1-(3-bromophenyl)ethyl]carbamic acid tert-butyl ester (5.0 g, 16.7 mmol), 1-pyridin-2-ylpiperazine (10.9 g, 67 mmol), Pd2(dba)3 (1.55 g, 10 mol %), di-t-butyl-biphenylphosphine (0.51 g, 10 mol %), potassium phosphate (7.2 g, 34 mmol) in ethyleneglycol dimethyl ether (40 mL) was refluxed for 4 h. After cooling to room temperature, the reaction mixture was diluted with dichloromethane (100 mL) and the precipitate was filtered off. The filtrate was concentrated under vacuum. The crude product was purified by flash chromatography over silica with ethyl acetate/hexanes (1:2) to provide the title compounds as an oil (4.1 g, 64% yield).

후처리

  1. temperaturewas refluxed for 4 h
  2. filtrationthe precipitate was filtered off
  3. concentrationThe filtrate was concentrated under vacuum
  4. customThe crude product was purified by flash chromatography over silica with ethyl acetate/hexanes (1:2)

출처 및 근거

ORD 기록
ord-0a309e52be4b46568b3b57cb491326c7
출처 데이터셋
uspto-grants-2006_08
특허 번호
US07087609B2

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