N-(4-(3-chloropyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine → N-(4-(3-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine

HRID 887454

Reaktionsgleichung

Reaktionsgleichung von HRID 887454
Cl[C:2]1[C:3]([O:8][C:9]2[CH:14]=[CH:13][C:12]([NH:15][C:16]3[S:17][C:18]4[CH:24]=[CH:23][CH:22]=[CH:21][C:19]=4[N:20]=3)=[CH:11][CH:10]=2)=[N:4][CH:5]=[CH:6][N:7]=1.[O:25]1[CH2:30][CH2:29][CH:28]([Mg]Br)[CH2:27][CH2:26]1>C1COCC1.CN1C(=O)CCC1.C/C(/[O-])=C/C(C)=O.C/C(/[O-])=C/C(C)=O.C/C(/[O-])=C/C(C)=O.[Fe+3]>[O:25]1[CH2:30][CH2:29][CH:28]([C:2]2[C:3]([O:8][C:9]3[CH:14]=[CH:13][C:12]([NH:15][C:16]4[S:17][C:18]5[CH:24]=[CH:23][CH:22]=[CH:21][C:19]=5[N:20]=4)=[CH:11][CH:10]=3)=[N:4][CH:5]=[CH:6][N:7]=2)[CH2:27][CH2:26]1

Komponenten

6

Edukt 2

HCID 59351351N-(4-(3-chloropyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amineHCID 178419654HCID 178419654, Verbindung

Produkt 1

HCID 59351180N-(4-(3-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 5483663Ferric acetylacetonateKatalysatorHCID 8028TetrahydrofuranLösungsmittelHCID 13387N-methyl-2-pyrrolidoneLösungsmittel

Versuchsvorschrift

To a round bottomed flask was added N-(4-(3-chloropyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine (0.3000 g, 0.846 mmol) dissolved in a mixture of THF (1.353 mL) and NMP (0.338 mL). Iron(III)acetylacetonate (0.015 g, 0.042 mmol) was added and the temperature was brought to 0° C. (Tetrahydro-2H-pyran-4-yl)magnesium bromide (3.70 mL, 2.96 mmol) was added dropwise to the reaction. The reaction was quenched with sat. ammonium chloride. The reaction mixture was diluted with water and extracted with EtOAc. The organic extract was washed with water, brine, dried with magnesium sulfate, filtered, and concentrated. LC showed formation of N-(4-(3-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine and N-(4-(pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine. The crude product was adsorbed onto a plug of silica gel and chromatographed through a Biotage pre-packed silica gel column (40S), eluting with a gradient of 1% to 5% MeOH in DCM, to provide N-(4-(3-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine. MS (ESI, pos. ion) m/z: 405.0 (M+1). IC50 (uM) +++++.

Aufarbeitung

  1. customwas brought to 0° C.
  2. additionwas added dropwise to the reaction
  3. customThe reaction was quenched with sat. ammonium chloride
  4. additionThe reaction mixture was diluted with water
  5. extractionextracted with EtOAc
  6. extractionThe organic extract
  7. washwas washed with water, brine
  8. dry with materialdried with magnesium sulfate
  9. filtrationfiltered
  10. concentrationconcentrated
  11. customchromatographed through a Biotage pre-packed silica gel column (40S)
  12. washeluting with a gradient of 1% to 5% MeOH in DCM

Quellen und Nachweise

ORD-Eintrag
ord-4efa4966a922463bb1749c49cb572007
Quelldatensatz
uspto-grants-2012_08
Patentnummer
US08247418B2

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