Tetrahydrofuran → tert-Butyl [5-({2-[(tert-butoxycarbonyl)amino]-5-nitrophenyl}ethynyl)pyridin-3-yl]carbamate

HRID 541885

반응식

HRID 541885 반응식
I[C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[CH:4][C:3]=1[NH:11][C:12](=[O:18])[O:13][C:14]([CH3:17])([CH3:16])[CH3:15].O1CCCC1.[C:24]([C:26]1[CH:27]=[C:28]([NH:32][C:33](=[O:39])[O:34][C:35]([CH3:38])([CH3:37])[CH3:36])[CH:29]=[N:30][CH:31]=1)#[CH:25]>[Cu]I.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.C(N(CC)CC)C>[C:14]([O:13][C:12]([NH:11][C:3]1[CH:4]=[CH:5][C:6]([N+:8]([O-:10])=[O:9])=[CH:7][C:2]=1[C:25]#[C:24][C:26]1[CH:27]=[C:28]([NH:32][C:33](=[O:39])[O:34][C:35]([CH3:37])([CH3:36])[CH3:38])[CH:29]=[N:30][CH:31]=1)=[O:18])([CH3:17])([CH3:16])[CH3:15]

참가 물질

7

반응물 3

HCID 8028TetrahydrofuranHCID 7098713Tert-butyl 4-nitro-2-iodophenylcarbamateHCID 57962286Tert-butyl (5-ethynylpyridin-3-yl)carbamate

생성물 1

HCID 57961805tert-Butyl [5-({2-[(tert-butoxycarbonyl)amino]-5-nitrophenyl}ethynyl)pyridin-3-yl]carbamate수율 85.9%

시약·촉매·용매 3

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

실험 절차

Into the reaction flask was added tert-butyl (2-iodo-4-nitrophenyl)carbamate (1.5 g, 4.1 mmol) and copper(I) iodide (0.031 g, 0.16 mmol), bis(triphenylphosphine)palladium(II) chloride (0.12 g, 0.16 mmol), tetrahydrofuran (10 mL), and triethylamine (0.63 mL). The mixture was stirred under bubbling N2 for 5 min, and tert-butyl (5-ethynylpyridin-3-yl)carbamate (0.90 g, 4.1 mmol) was then added. The reaction mixture was stirred at 65° C. for 1 h. After concentration, the residue was diluted with EtOAc and water. The aqueous layer was extracted again with EtOAc. The organic layers were combined and dried over Na2SO4. After filtration and concentration, the crude was purified by silica gel column chromatography to give the desired product (1.6 g, 85%). LCMS for C23H27N4O6 (M+H)+: m/z=455.1.

후처리

  1. stirringThe reaction mixture was stirred at 65° C. for 1 h
  2. concentrationAfter concentration
  3. additionthe residue was diluted with EtOAc and water
  4. extractionThe aqueous layer was extracted again with EtOAc
  5. dry with materialdried over Na2SO4
  6. filtrationAfter filtration and concentration
  7. customthe crude was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-35cd0205c64f46ebb284da88f40a808b
출처 데이터셋
uspto-grants-2014_10
특허 번호
US08871753B2

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