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Methanol → 8-Cyclopropyl-6-ethynyl-3 4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cvclopropane]

HRID 278683
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반응식

HRID 278683 반응식
[CH:1]1([C:4]2[C:15]3[O:14][C:11]4([CH2:13][CH2:12]4)[CH2:10][C:9]([CH3:17])([CH3:16])[C:8]=3[CH:7]=[C:6]([C:18]#[C:19][Si](C)(C)C)[CH:5]=2)[CH2:3][CH2:2]1.CO.C(=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C>CCCCCC>[CH:1]1([C:4]2[C:15]3[O:14][C:11]4([CH2:13][CH2:12]4)[CH2:10][C:9]([CH3:16])([CH3:17])[C:8]=3[CH:7]=[C:6]([C:18]#[CH:19])[CH:5]=2)[CH2:3][CH2:2]1
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참가 물질

6

반응물 4

HCID 887MethanolHCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 225688398-Cyclopropyl-3,4-dihydro-4,4-dimethyl-6-(trimethylsilanyl)ethynylspiro[2 H 1-benzopyran-2,1'-cyclopropane]

생성물 1

HCID 225689518-Cyclopropyl-6-ethynyl-3 4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cvclopropane]

시약·촉매·용매 1

HCID 8058
Hexane
용매

실험 절차

Following general procedure E, and 8-cyclopropyl-3,4-dihydro-4,4-dimethyl-6-(trimethylsilanyl)ethynylspiro[2H-1-benzopyran-2,′-cyclopropane] (Intermediate 43, 0.62 g, 1.9 mmol), methanol and potassium carbonate (0.5 g, 3.6 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using 1-2% ethyl acetate in hexane as the eluent, the title compound was obtained as an oil (0.5 g, 100%).

출처 및 근거

ORD 기록
ord-ce4bc4a85db240279151437d26805e7f
출처 데이터셋
uspto-grants-2002_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06359135B1

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