3-Methylbut-1-yne → 2-Chloro-5-(3-methylbut-1-ynyl)pyridin-4-amine

HRID 43268

Reaktionsgleichung

Reaktionsgleichung von HRID 43268
[Cl:1][C:2]1[CH:7]=[C:6]([NH2:8])[C:5](I)=[CH:4][N:3]=1.[CH3:10][CH:11]([CH3:14])[C:12]#[CH:13]>CCN(CC)CC.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>[Cl:1][C:2]1[CH:7]=[C:6]([NH2:8])[C:5]([C:13]#[C:12][CH:11]([CH3:14])[CH3:10])=[CH:4][N:3]=1

Komponenten

6

Edukt 2

HCID 690193-Methylbut-1-yneHCID 454803662-Chloro-5-iodopyridin-4-amine2×

Produkt 1

HCID 580250642-Chloro-5-(3-methylbut-1-ynyl)pyridin-4-amine

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 8471TriethylamineLösungsmittel

Versuchsvorschrift

To a solution of 2-chloro-5-iodopyridin-4-amine (Compound 11, 2.55 g, 10.0 mmol) in Et3N (35 ml) was added Pd(PPh3)2Cl2 (70 mg, 0.10 mmol), CuI (19 mg, 0.10 mmol), and 3-methyl-1-butyne (1.2 ml, 12 mmol). The reaction was stirred at room temperature for 20 h and was quenched with H2O, extracted with EtOAc (Δ2). The combined organic layer was washed with brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by chromatography on silica gel (0→30% EtOAc-hexanes) to yield the title compound as an off-white solid.

Aufarbeitung

  1. customwas quenched with H2O
  2. extractionextracted with EtOAc (Δ2)
  3. washThe combined organic layer was washed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by chromatography on silica gel (0→30% EtOAc-hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-c536abf1d78f45489380ea426fc5482d
Quelldatensatz
uspto-grants-2013_09
Patentnummer
US08536339B2

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