Triethylamine → 2-Fluoro-3-((trimethylsilyl)ethynyl)pyridine

HRID 75186

Reaktionsgleichung

[F:1][C:2]1[C:7](I)=[CH:6][CH:5]=[CH:4][N:3]=1.[CH3:9][Si:10]([C:13]#[CH:14])([CH3:12])[CH3:11].C(N(CC)CC)C>CN(C)C=O.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>[F:1][C:2]1[C:7]([C:14]#[C:13][Si:10]([CH3:12])([CH3:11])[CH3:9])=[CH:6][CH:5]=[CH:4][N:3]=1

Komponenten

Reaktionsbedingungen

Temperatur: 25 °C

Versuchsvorschrift

Into a 1-neck round-bottom flask was added 2-fluoro-3-iodopyridine (1.0 g, 0.0045 mol), trimethylsilylacetylene (0.95 mL, 6.7 mmol), bis(triphenylphosphine)palladium(II) chloride (0.2 g, 0.2 mmol), copper(I) iodide (0.07 g, 0.4 mmol), and triethylamine (0.94 mL, 6.7 mmol) in N,N-dimethylformamide (20 mL). The reaction was stirred at 25° C. for 16 hours. The reaction was extracted with EtOAc, washed with brine, dried over MgSO4, and concentrated under vacuum. The product was purified by column chromatography on silica gel (10% ethyl acetate 90% hexanes) to give 0.747 g of the desired product. 1H NMR (400 MHz, CDCl3): δ 7.86-7.89 (m, 1H), 7.55-7.61 (m, 1H), 6.86-6.90 (m, 1H). MS [M+H]=194.0

Aufarbeitung

extractionThe reaction was extracted with EtOAc
washwashed with brine
dry with materialdried over MgSO4
concentrationconcentrated under vacuum
customThe product was purified by column chromatography on silica gel (10% ethyl acetate 90% hexanes)

Quellen und Nachweise

ORD-Eintrag: ord-a8e646a968b04ae98ba029057129555c
Quelldatensatz: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08835423B2

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