Acetyl chloride → Ethyl 1-acetyl-8-oxa-1-azaspiro[4.5]decane-2-carboxylate

HRID 535151노트

반응식

HRID 535151 반응식
[NH:1]1[C:5]2([CH2:10][CH2:9][O:8][CH2:7][CH2:6]2)[CH2:4][CH2:3][CH:2]1[C:11]([O:13][CH2:14][CH3:15])=[O:12].CCN(C(C)C)C(C)C.[C:25](Cl)(=[O:27])[CH3:26]>ClCCl>[C:25]([N:1]1[C:5]2([CH2:6][CH2:7][O:8][CH2:9][CH2:10]2)[CH2:4][CH2:3][CH:2]1[C:11]([O:13][CH2:14][CH3:15])=[O:12])(=[O:27])[CH3:26]

참가 물질

5

반응물 3

HCID 6367Acetyl chlorideHCID 81531DiisopropylethylamineHCID 58313084Ethyl 8-oxa-1-azaspiro[4.5]decane-2-carboxylate

생성물 1

HCID 58313107Ethyl 1-acetyl-8-oxa-1-azaspiro[4.5]decane-2-carboxylate수율 58.4%

시약·촉매·용매 1

HCID 6344Dichloromethane용매2회

실험 절차

To a solution of ethyl 8-oxa-1-azaspiro[4.5]decane-2-carboxylate (166) (135 mg, 0.63 mmol) in anhydrous dichloromethane (2 mL) was added Hunig's base (0.22 mL, 1.3 mmol) followed by acetyl chloride (0.05 mL, 0.76 mmol) and the reaction stirred at room temperature under nitrogen for 1.5 h. The reaction was diluted with dichloromethane and washed with 0.1 N HCl and the organic layer dried over MgSO4 and concentrated in vacuo. The residue was purified by silica gel chromatography eluting with 60-100% hexanes/EtOAc to afford the title compound as a yellow oil (94 mg, 58% yield).

후처리

  1. washwashed with 0.1 N HCl
  2. dry with materialthe organic layer dried over MgSO4
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by silica gel chromatography
  5. washeluting with 60-100% hexanes/EtOAc

출처 및 근거

ORD 기록
ord-ca55592df88b4d478bc6adfb70780bda
출처 데이터셋
uspto-grants-2014_10
특허 번호
US08853416B2

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