Hydrochloric Acid → Ethyl 1-acetyl-5-(cyclohexylmethyl)piperidine-3-carboxylate

HRID 253102노트

반응식

HRID 253102 반응식
C(N(CC)CC)C.[CH:8]1([CH2:14][CH:15]2[CH2:20][NH:19][CH2:18][CH:17]([C:21]([O:23][CH2:24][CH3:25])=[O:22])[CH2:16]2)[CH2:13][CH2:12][CH2:11][CH2:10][CH2:9]1.[C:26](Cl)(=[O:28])[CH3:27].Cl>C(Cl)Cl>[C:26]([N:19]1[CH2:20][CH:15]([CH2:14][CH:8]2[CH2:9][CH2:10][CH2:11][CH2:12][CH2:13]2)[CH2:16][CH:17]([C:21]([O:23][CH2:24][CH3:25])=[O:22])[CH2:18]1)(=[O:28])[CH3:27]

참가 물질

6

반응물 4

HCID 313Hydrochloric AcidHCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 66844627Ethyl 5-(cyclohexylmethyl)piperidine-3-carboxylate

생성물 1

HCID 66844834Ethyl 1-acetyl-5-(cyclohexylmethyl)piperidine-3-carboxylate

시약·촉매·용매 1

HCID 6344Dichloromethane용매2회

실험 절차

Triethylamine (410 μL, 2.9 mmol) was added to a solution of ethyl 5-(cyclohexylmethyl)piperidine-3-carboxylate (180 mg, 0.71 mmol) and acetyl chloride (120 mg, 1.4 mmol) in CH2Cl2 (10 mL). The reaction was maintained at room temperature for 30 min before being diluted with CH2Cl2 (20 mL) and poured into HCl (1 N, 20 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2 (3×20 mL). The combined organic layers were sequentially washed with H2O (10 mL) and brine before being dried over Na2SO4. Concentration under reduced pressure and purification by silica gel chromatography (hexane→80% EtOAc/hexane) provided the title compound as a yellow oil. MS m/z: 296.1 (M+1).

후처리

  1. customThe layers were separated
  2. extractionthe aqueous layer was extracted with CH2Cl2 (3×20 mL)
  3. washThe combined organic layers were sequentially washed with H2O (10 mL) and brine
  4. dry with materialbefore being dried over Na2SO4
  5. concentrationConcentration
  6. customunder reduced pressure and purification by silica gel chromatography (hexane→80% EtOAc/hexane)

출처 및 근거

ORD 기록
ord-e3ac8f2146e047ecb98b6e5066689de2
출처 데이터셋
uspto-grants-2011_01
특허 번호
US07872009B2

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