Acetic Acid → 1,1-Dimethylethyl 4-{4-[3-(methyloxy)-4-nitrophenyl]-3-cyclohexen-1-yl}-1-piperazinecarboxylate

HRID 419405노트

반응식

HRID 419405 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:12]2[CH2:17][CH2:16][C:15](=O)[CH2:14][CH:13]=2)[CH:6]=[CH:7][C:8]=1[N+:9]([O-:11])=[O:10].[C:19]([N:26]1[CH2:31][CH2:30][NH:29][CH2:28][CH2:27]1)([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].CC(O)=O>ClCCCl.C(Cl)Cl.C([O-])(O)=O.[Na+]>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:12]2[CH2:17][CH2:16][CH:15]([N:29]3[CH2:28][CH2:27][N:26]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:31][CH2:30]3)[CH2:14][CH:13]=2)[CH:6]=[CH:7][C:8]=1[N+:9]([O-:11])=[O:10]

참가 물질

8

반응물 4

HCID 176Acetic AcidHCID 143452tert-Butyl piperazine-1-carboxylateHCID 5049666Sodium triacetoxyborohydrideHCID 594528844-[3-(Methyloxy)-4-nitrophenyl]-3-cyclohexen-1-one

생성물 1

HCID 594529421,1-Dimethylethyl 4-{4-[3-(methyloxy)-4-nitrophenyl]-3-cyclohexen-1-yl}-1-piperazinecarboxylate수율 77%

시약·촉매·용매 3

HCID 111,2-Dichloroethane용매HCID 6344Dichloromethane용매HCID 516892Sodium Bicarbonate용매

실험 절차

A solution of 4-[3-(methyloxy)-4-nitrophenyl]-3-cyclohexen-1-one (514 mg, 2.08 mmol) and 1-BOC-piperazine (430 mg, 2.28 mmol) were stirred in DCE (8 mL) at rt under N2. To this mixture was added sodium triacetoxyborohydride (610 mg, 2.89 mmol) and HOAc (125 mg, 2.08 mmol). The reaction was stirred for approximately 24 h. The reaction was diluted with DCM and aqueous (saturated) NaHCO3. The aqueous layer was extracted with DCM (3×). The combined organic layers were dried over MgSO4, filtered, then concentrated and purified by silica gel chromatography to give the title compound of step E (669 mg, 1.60 mmol, 77%) as a tan solid. MS (ESI): 418 [M+H]+.

후처리

  1. extractionThe aqueous layer was extracted with DCM (3×)
  2. dry with materialThe combined organic layers were dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. custompurified by silica gel chromatography

출처 및 근거

ORD 기록
ord-c0d6cf88363540c7bfbe172361d8cbef
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08093239B2

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