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Triethylamine → 2-[1-(Biphenyl-4-carbonyl)-pyrrolidin-2-yl]-5-(4-tert-butoxycarbonylamino-pyridin-3-yl)-pent-4-ynoic acid methyl ester

HRID 901326
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 901326
[CH3:1][O:2][C:3](=[O:27])[CH:4]([CH:8]1[CH2:12][CH2:11][CH2:10][N:9]1[C:13]([C:15]1[CH:20]=[CH:19][C:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:17][CH:16]=1)=[O:14])[CH2:5][C:6]#[CH:7].[C:28]([O:32][C:33](=[O:42])[NH:34][C:35]1[CH:40]=[CH:39][N:38]=[CH:37][C:36]=1I)([CH3:31])([CH3:30])[CH3:29].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)I.CN(C=O)C>[CH3:1][O:2][C:3](=[O:27])[CH:4]([CH:8]1[CH2:12][CH2:11][CH2:10][N:9]1[C:13]([C:15]1[CH:16]=[CH:17][C:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:19][CH:20]=1)=[O:14])[CH2:5][C:6]#[C:7][C:40]1[CH:39]=[N:38][CH:37]=[CH:36][C:35]=1[NH:34][C:33]([O:32][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:42]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 3

HCID 8471TriethylamineHCID 10903275(3-Iodo-pyridin-4-yl)-carbamic acid tert-butyl esterHCID 865880852-[1-(Biphenyl-4-carbonyl)-pyrrolidin-2-yl]-pent-4-ynoic acid methyl ester

Produkt 1

HCID 692528602-[1-(Biphenyl-4-carbonyl)-pyrrolidin-2-yl]-5-(4-tert-butoxycarbonylamino-pyridin-3-yl)-pent-4-ynoic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 83717
Copper iodide
Katalysator
HCID 178418476HCID 178418476, VerbindungKatalysator
HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

A flask is charged with 2-[1-(Biphenyl-4-carbonyl)-pyrrolidin-2-yl]-pent-4-ynoic acid methyl ester (0.58 g, 1.62 mmol), (3-iodopyridin-4-yl)-carbamic acid tert-butyl ester (0.52 g, 1.62 mmol), bis(triphenylphosphine)-palladium(II) chloride (0.057 g, 0.081 mmol), copper iodide (0.0104 g, 0.055 mmol), triethylamine (0.90 mL, 6.5 mmol) and DMF (7.3 mL) and heated at 90° C. for 2 h. The reaction is cooled to RT and partitioned between EtOAc (200 mL) and saturated sodium bicarbonate (75 mL). The organic layer is washed with saturated sodium bicarbonate (2×75 mL), brine (50 mL), dried over MgSO4 and concentrated. The residue is subjected to flash chromatography (1:1/EtOAc:hexanes) to give 2-[1-(biphenyl-4-carbonyl)-pyrrolidin-2-yl]-5-(4-tert-butoxycarbonylamino-pyridin-3-yl)-pent-4-ynoic acid methyl ester as an impure mixture (0.35 g, three components) which is used without further purification. This material (0.35 g, 0.63 mmol estimated), DBU (0.19 g, 1.26 mmol) and acetonitrile (7 mL) is stirred at 50° C. for 6 h. The reaction mixture is concentrated and purified by flash chromatography (0.5% MeOH/CH2Cl2) to (2.0% MeOH/CH2Cl2) to give the title compound (0.18 g, 0.325 mmol). 1H NMR (CDCl3, 300 MHz) 8.83(s, 1H), 8.41(m, 1H), 8.25(d, 1H), 7.65-7.53(m, 6H), 7.52-7.32(m, 3H), 6.80(s, 1H), 4.84-4.68(m, 1H), 3.73, 3.68(two s, 3H), 3.67-3.35(m, 6H), 2.21-1.91(m, 4H), 1.67(s, 9H).

Aufarbeitung

  1. temperatureThe reaction is cooled to RT
  2. custompartitioned between EtOAc (200 mL) and saturated sodium bicarbonate (75 mL)
  3. washThe organic layer is washed with saturated sodium bicarbonate (2×75 mL), brine (50 mL)
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-fff12119c10849d7b8861deadfd3a438
Quelldatensatz
uspto-grants-2008_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07361663B2

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