Hydrochloric Acid → Ethyl 4-[bis(phenylmethyl)amino]cyclohexanecarboxylate

HRID 1837622노트

반응식

HRID 1837622 반응식
O=[C:2]1[CH2:7][CH2:6][CH:5]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH2:4][CH2:3]1.[CH2:13]([NH:20][CH2:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].Cl.[OH-].[Na+]>ClCCCl>[CH2:21]([N:20]([CH:2]1[CH2:7][CH2:6][CH:5]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH2:4][CH2:3]1)[CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1

참가 물질

7

반응물 5

HCID 313Hydrochloric AcidHCID 7656DibenzylamineHCID 14798Sodium HydroxideHCID 317638Ethyl 4-oxocyclohexanecarboxylateHCID 5049666Sodium triacetoxyborohydride

생성물 1

HCID 22287000Ethyl 4-[bis(phenylmethyl)amino]cyclohexanecarboxylate수율 87.9%

시약·촉매·용매 1

HCID 111,2-Dichloroethane용매

실험 절차

To a solution of ethyl 4-oxocyclohexanecarboxylate (1.9 g, 11 mmol) in 1,2-dichloroethane (113 mL) at 23° C. was added dibenzylamine (3.4 g, 3.3 mL, 17 mmol) in one portion. After 10 min, sodium triacetoxyborohydride (4.81 g, 22.7 mmol) was added, and the resulting cloudy suspension was stirred for 48 hrs. The suspension was poured into 1N aqueous hydrogen chloride (100 mL), the resulting mixture was basified to pH 9.0-10.0 with 12.5 M aqueous sodium hydroxide. The basic layer was extracted with ethyl acetate (3×50 mL), and the combined organic layers were washed with saturated aqueous sodium chloride (70 mL), dried over sodium sulfate, and concentrated in vacuo. The resulting residue was purified by flash chromatography (5-10% ethyl acetate in hexanes) to yield ethyl 4-(N,N-dibenzylamino)cyclohexanecarboxylate (3.4 g, 84%) as a clear oil. MS (ESI) 352 (M+H).

후처리

  1. extractionThe basic layer was extracted with ethyl acetate (3×50 mL)
  2. washthe combined organic layers were washed with saturated aqueous sodium chloride (70 mL)
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe resulting residue was purified by flash chromatography (5-10% ethyl acetate in hexanes)

출처 및 근거

ORD 기록
ord-492d5d2234de4874838221f5bdaac4d7
출처 데이터셋
uspto-grants-2004_08
특허 번호
US06784200B2

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