Methanesulfonyl chloride → 4-(4-Bromo-pyrazol-1-yl)-1-methanesulfonyl-piperidine

HRID 2400332Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2400332
Cl.[Br:2][C:3]1[CH:4]=[N:5][N:6]([CH:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)[CH:7]=1.CCN(C(C)C)C(C)C.[CH3:23][S:24](Cl)(=[O:26])=[O:25]>CC#N>[Br:2][C:3]1[CH:4]=[N:5][N:6]([CH:8]2[CH2:13][CH2:12][N:11]([S:24]([CH3:23])(=[O:26])=[O:25])[CH2:10][CH2:9]2)[CH:7]=1

Komponenten

5

Edukt 3

HCID 31297Methanesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 534078484-(4-bromo-1H-pyrazol-1-yl)piperidine hydrochloride

Produkt 1

HCID 681624404-(4-Bromo-pyrazol-1-yl)-1-methanesulfonyl-piperidineAusbeute 86,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a solution of 4-(4-bromopyrazol-1-yl)piperidine hydrochloride (380 mg, 1.43 mmol) in CH3CN (10 ml) at 0° C. was added DIPEA (0.75 mlml, 4.3 mmol) followed by methanesulphonyl chloride (0.11 ml, 1.43 mmol), stirred at 0° C. for 1 hour then allowed to warm up to RT over 1 hour. The reaction then partitioned between water and EtOAc. The organic layer was washed with brine, dried over MgSO4, filtered and concentrated under reduced pressure to give the product (380 mg), which was used without further purification 1H NMR (400 MHz, Me-d3-OD): 7.84 (1H, s), 7.50 (1H, s), 4.40-4.27 (1H, m), 3.86 (2H, d), 3.05-2.93 (2H, m), 2.90 (3H, s), 2.25-2.01 (4H, m).

Aufarbeitung

  1. temperatureto warm up to RT over 1 hour
  2. customThe reaction
  3. customthen partitioned between water and EtOAc
  4. washThe organic layer was washed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-d57133959bca40149620ff56cd488dd2
Quelldatensatz
uspto-grants-2014_08
Patentnummer
US08796244B2

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