Water → 3-((Trimethylsilyl)ethynyl)pyridin-2-amine

HRID 77797

Reaktionsgleichung

Reaktionsgleichung von HRID 77797
[NH2:1][C:2]1[C:7](Br)=[CH:6][CH:5]=[CH:4][N:3]=1.[CH3:9][Si:10]([C:13]#[CH:14])([CH3:12])[CH3:11].C(N(CC)C(C)C)(C)C.O>CN1CCCC1=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[CH3:9][Si:10]([C:13]#[C:14][C:7]1[C:2]([NH2:1])=[N:3][CH:4]=[CH:5][CH:6]=1)([CH3:12])[CH3:11]

Komponenten

8

Edukt 4

HCID 962WaterHCID 66111TrimethylsilylacetyleneHCID 81531DiisopropylethylamineHCID 8177002-Amino-3-bromopyridine

Produkt 1

HCID 574756663-((Trimethylsilyl)ethynyl)pyridin-2-amineAusbeute 94,3 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418397HCID 178418397, VerbindungKatalysatorHCID 13387N-methyl-2-pyrrolidoneLösungsmittel

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

To a solution of 2-amino-3-bromopyridine (5.72 g, 33.1 mmol) in N-methylpyrrolidinone (120 mL) were added trimethylsilyl acetylene (9.36 mL, 66.2 mmol), tetrakis(triphenylphosphine)palladium (0) (1.91 g, 1.66 mmol), copper (I) iodide (630 mg, 3.31 mmol) and N,N-diisopropylethylamine (11.5 mL, 66.2 mmol) at room temperature, which was stirred under nitrogen atmosphere for 6 hours at 70° C. Water was added to the reaction solution, which was then extracted with ethyl acetate. The organic layer was washed with water and saturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under a reduced pressure. The residue was purified by silica gel column chromatography (heptane:ethyl acetate=2:1) to obtain the title compound (5.94 g, 94%).

Aufarbeitung

  1. extractionwas then extracted with ethyl acetate
  2. washThe organic layer was washed with water and saturated aqueous sodium chloride
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under a reduced pressure
  5. customThe residue was purified by silica gel column chromatography (heptane:ethyl acetate=2:1)

Quellen und Nachweise

ORD-Eintrag
ord-1037695923d3435a9d15a1f5f3ee14cc
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08841327B2

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