Trifluoroacetic acid → 4-(4-Chlorophenyl)-4-methoxypiperidine

HRID 556988노트

반응식

HRID 556988 반응식
C(OC([N:8]1[CH2:13][CH2:12][C:11]([C:16]2[CH:21]=[CH:20][C:19]([Cl:22])=[CH:18][CH:17]=2)([O:14][CH3:15])[CH2:10][CH2:9]1)=O)(C)(C)C.FC(F)(F)C(O)=O>C(Cl)Cl>[Cl:22][C:19]1[CH:20]=[CH:21][C:16]([C:11]2([O:14][CH3:15])[CH2:10][CH2:9][NH:8][CH2:13][CH2:12]2)=[CH:17][CH:18]=1

참가 물질

4

반응물 2

HCID 6422Trifluoroacetic acidHCID 219975781-Tert-butoxycarbonyl-4-(4-chlorophenyl)-4-methoxypiperidine

생성물 1

HCID 224946584-(4-Chlorophenyl)-4-methoxypiperidine수율 97%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

4-(4-Chloro-phenyl)-4-methoxy-piperidine-1-carboxylic acid tert-butyl ester (0.108 g, 0.331 mmol) was dissolved in methylene chloride (6 mL) and cooled in an ice bath. Trifluoroacetic acid (2 mL) was added slowly dropwise. The mixture was stirred for 2 hr as it warmed to room temperature. The reaction mixture was concentrated in vacuo and then redissolved in methylene chloride and washed with saturated sodium bicarbonate (2×10 mL). The pooled aqueous layers were extracted with methylene chloride (2×10 mL). The methylene chloride extracts were pooled, dried over magnesium sulfate, filtered and concentrated in vacuo to give 4-(4-Chloro-phenyl)-4-methoxy-piperidine as a clear oil (72 mg, 97%).

후처리

  1. temperaturecooled in an ice bath
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. dissolutionredissolved in methylene chloride
  4. washwashed with saturated sodium bicarbonate (2×10 mL)
  5. extractionThe pooled aqueous layers were extracted with methylene chloride (2×10 mL)
  6. dry with materialdried over magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-d6a839358fb04625bd50ba681234e019
출처 데이터셋
uspto-grants-2011_11
특허 번호
US08058287B2

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