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Methyl vinyl ketone → Tert-butyl 9-oxo-3-azaspiro[5.5]undec-7-ene-3-carboxylate

HRID 1056637
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인쇄 미리보기

반응식

HRID 1056637 반응식
[CH:1]([CH:3]1[CH2:8][CH2:7][N:6]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:5][CH2:4]1)=O.[OH-].[K+].[CH3:18][C:19](=[O:22])[CH:20]=[CH2:21]>CCO>[O:22]=[C:19]1[CH2:20][CH2:21][C:3]2([CH2:8][CH2:7][N:6]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:5][CH2:4]2)[CH:1]=[CH:18]1
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참가 물질

5

반응물 3

HCID 6570Methyl vinyl ketoneHCID 14797Potassium HydroxideHCID 1514430tert-Butyl 4-formylpiperidine-1-carboxylate

생성물 1

HCID 59311817Tert-butyl 9-oxo-3-azaspiro[5.5]undec-7-ene-3-carboxylate수율 41.8%

시약·촉매·용매 1

HCID 702Ethanol용매

반응 조건

온도
70 °C

실험 절차

To a solution of tert-butyl 4-formylpiperidine-1-carboxylate (10.0 g, 46.9 mmol) and KOH (1.3 g, 23.5 mmol) in EtOH (200 mL) was added but-3-en-2-one (3.9 g, 56.3 mmol), the mixture was stirred at 70° C. for 16 h and concentrated in vacuo. The residue was purified by silica gel column chromatography (EtOAc/PE (v/v)=1/4) to give the product as brown oil (5.2 g, 41.8%).

후처리

  1. concentrationconcentrated in vacuo
  2. customThe residue was purified by silica gel column chromatography (EtOAc/PE (v/v)=1/4)

출처 및 근거

ORD 기록
ord-84cc458480b7429eb553ac4fca485d37
출처 데이터셋
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09399637B2

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