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7-iodo-6-methoxybenzofuran-3(2H)-one → Tert-butyl 4-[4-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)but-3-ynyl]piperazine-1-carboxylate

HRID 1749951
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HRID 1749951 반응식
[CH2:1]([N:5]1[CH2:10][CH2:9][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:7][CH2:6]1)[CH2:2][C:3]#[CH:4].I[C:19]1[C:27]2[O:26][CH2:25][C:24](=[O:28])[C:23]=2[CH:22]=[CH:21][C:20]=1[O:29][CH3:30]>C(N(CC)CC)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[CH3:30][O:29][C:20]1[CH:21]=[CH:22][C:23]2[C:24](=[O:28])[CH2:25][O:26][C:27]=2[C:19]=1[C:4]#[C:3][CH2:2][CH2:1][N:5]1[CH2:6][CH2:7][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:9][CH2:10]1
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참가 물질

6

반응물 2

HCID 712788737-iodo-6-methoxybenzofuran-3(2H)-oneHCID 72213388Tert-butyl 4-(but-3-yn-1-yl)piperazine-1-carboxylate

생성물 1

HCID 71278868Tert-butyl 4-[4-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)but-3-ynyl]piperazine-1-carboxylate수율 35.5%

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매
HCID 178418476
HCID 178418476, 화합물
촉매
HCID 8471Triethylamine용매

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온도
50 °C

실험 절차

A solution of tert-butyl 4-(but-3-ynyl)piperazine-1-carboxylate (0.316 g, 1.33 mmol) in triethylamine (5 mL) was added with 7-iodo-6-methoxybenzofuran-3(2H)-one (0.385 g, 1.33 mmol), dichlorobis(triphenylphosphine)palladium(II) (0.0933 g, 0.133 mmol) and copper(I) iodide (0.0127 g, 0.0665 mmol), and the mixture was stirred at 50° C. for 4 hours. The reaction mixture was concentrated, and then added with water, and the mixture was extracted twice with ethyl acetate. The organic layer was washed with saturated brine, then dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain tert-butyl 4-[4-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)but-3-ynyl]piperazine-1-carboxylate (0.189 g, 35%).

후처리

  1. concentrationThe reaction mixture was concentrated
  2. additionadded with water
  3. extractionthe mixture was extracted twice with ethyl acetate
  4. washThe organic layer was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate)

출처 및 근거

ORD 기록
ord-bb99479f8632433f9baa49d43d729fbf
출처 데이터셋
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09156827B2

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