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Diisopropylethylamine → 1,1-Dimethylethyl N-((4-hydroxy-7-methoxy-2-oxo-2',3',5',6'-tetrahydro-spiro[naphthalene-1,4'-pyran]-3-yl)carbonyl)glycinate

HRID 1868673
노트
인쇄 미리보기

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HRID 1868673 반응식
[OH:1][C:2]1[C:16]2[C:11](=[CH:12][C:13]([O:17][CH3:18])=[CH:14][CH:15]=2)[C:5]2([CH2:10][CH2:9][O:8][CH2:7][CH2:6]2)[C:4](=[O:19])[C:3]=1[C:20](OCC)=[O:21].Cl.[NH2:26][CH2:27][C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29].C(N(C(C)C)C(C)C)C>O1CCOCC1>[OH:1][C:2]1[C:16]2[C:11](=[CH:12][C:13]([O:17][CH3:18])=[CH:14][CH:15]=2)[C:5]2([CH2:6][CH2:7][O:8][CH2:9][CH2:10]2)[C:4](=[O:19])[C:3]=1[C:20]([NH:26][CH2:27][C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])=[O:21]
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참가 물질

5

반응물 3

HCID 81531DiisopropylethylamineHCID 2725036Glycine tert-butyl ester hydrochlorideHCID 67099622Ethyl 4-hydroxy-7-methoxy-2-oxo-2',3',5',6'-tetrahydro-spiro[naphthalene-1,4'-pyran]-3-carboxylate

생성물 1

HCID 670998131,1-Dimethylethyl N-((4-hydroxy-7-methoxy-2-oxo-2',3',5',6'-tetrahydro-spiro[naphthalene-1,4'-pyran]-3-yl)carbonyl)glycinate수율 52.4%

시약·촉매·용매 1

HCID 31275
1,4-Dioxane
용매

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온도
86 °C

실험 절차

A mixture of ethyl 4-hydroxy-7-methoxy-2-oxo-2′,3′,5′,6′-tetrahydro-spiro[naphthalene-1,4′-pyran]-3-carboxylate (0.52 g, 1.6 mmol), tert-butyl 2-aminoacetate hydrochloride (0.39 g, 2.3 mmol) in 5 mL dioxane was treated with N-ethyl-N-isopropylpropan-2-amine (0.61 g, 4.7 mmol). The mixture was warmed to 86° C. and stirred for 4 hours, M+1=418. The mixture was cooled to room temperature and concentrated in vacuo. The crude product was purified by column chromatography eluting with 10-30% EtOAc/hexane to give 0.35 g of the title compound as a pale yellow solid. MS (m/z)=418 (M+H)+.

후처리

  1. temperatureThe mixture was cooled to room temperature
  2. concentrationconcentrated in vacuo
  3. customThe crude product was purified by column chromatography
  4. washeluting with 10-30% EtOAc/hexane

출처 및 근거

ORD 기록
ord-afe820057f104a178e40b854b66f608c
출처 데이터셋
uspto-grants-2009_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07635715B2

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