N,N-Dimethylmethanesulphonamide → C-[3-(2-Chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethyl-methanesulfonamide

HRID 2114573

Reaktionsgleichung

Reaktionsgleichung von HRID 2114573
[CH3:1][N:2]([CH3:7])[S:3]([CH3:6])(=[O:5])=[O:4].[Li]CCCC.Cl[C:14]1[N:19]=[C:18]([S:20][CH3:21])[N:17]=[C:16]2[N:22]([CH2:32][O:33][CH2:34][CH2:35][Si:36]([CH3:39])([CH3:38])[CH3:37])[N:23]=[C:24]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=3[Cl:31])[C:15]=12>C1COCC1>[Cl:31][C:26]1[CH:27]=[CH:28][CH:29]=[CH:30][C:25]=1[C:24]1[C:15]2[C:16](=[N:17][C:18]([S:20][CH3:21])=[N:19][C:14]=2[CH2:6][S:3]([N:2]([CH3:7])[CH3:1])(=[O:5])=[O:4])[N:22]([CH2:32][O:33][CH2:34][CH2:35][Si:36]([CH3:37])([CH3:39])[CH3:38])[N:23]=1

Komponenten

5

Edukt 3

HCID 70191N,N-DimethylmethanesulphonamideHCID 578933704-Chloro-3-(2-chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidineHCID 178418339Butyllithium

Produkt 1

HCID 68878703C-[3-(2-Chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethyl-methanesulfonamideAusbeute 70,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a solution of N,N-dimethyl methanesulfonamide (419 mg, 3.40 mmol) in 5 mL dry THF at 5° C. was added n-BuLi (2.2 mL of 1.6M solution in hexanes 3.50 mmol) dropwise. To this stirring solution was added dropwise a solution of 4-Chloro-3-(2-chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidine (0.500 g, 1.13 mmol) in 1 mL dry THF. The reaction mixture was stirred for 2 hours and allowed to warm to room temperature during this time. The reaction was quenched by addition of 10 mL water and 1 mL of 1.2M HCl, and the resulting aqueous solution was extracted twice with 20 mL methylene chloride. The combined organic layers were dried over MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by flash chromatography (0% to 30% EtOAc in hexanes) to give 421 mg of C-[3-(2-Chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethyl-methanesulfonamide.

Aufarbeitung

  1. customThe reaction was quenched by addition of 10 mL water and 1 mL of 1.2M HCl
  2. extractionthe resulting aqueous solution was extracted twice with 20 mL methylene chloride
  3. dry with materialThe combined organic layers were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by flash chromatography (0% to 30% EtOAc in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-20c080bea3e1497397888f8531a5caab
Quelldatensatz
uspto-grants-2008_10
Patentnummer
US07435731B2

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