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

HRID 555808Notes

Reaction equation

HRID 555808 reaction equation
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.Cl.[O:26]1[CH2:31][CH2:30][CH2:29][CH:28]([NH2:32])[CH2:27]1.CCN(C(C)C)C(C)C>C(O)(C)C>[O:26]1[CH2:31][CH2:30][CH2:29][CH:28]([NH:32][C:2]2[C:3]([O:8][C:9]3[CH:10]=[CH:11][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:13][CH:14]=3)=[N:4][CH:5]=[CH:6][N:7]=2)[CH2:27]1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 46735995Oxan-3-amine hydrochlorideHCID 59351351N-(4-(3-chloropyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine

Product 1

HCID 46208829N-(4-(3-(tetrahydro-2H-pyran-3-ylamino)pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Conditions

Temperature
200 °C

Procedure

To a microwave vial was charged with N-(4-(3-chloropyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine (0.25 g, 0.71 mmol), tetrahydro-2H-pyran-3-amine hydrochloride (0.19 g, 1.4 mmol), and DIPEA (0.49 mL, 2.8 mmol) in isopropyl alcohol (2 mL). The reaction was stirred and heated in a Discover® model microwave reactor (CEM, Matthews, N.C.) at 200° C. for 30 min (200 watts, Powermax™ feature on), then at the same temperature for another 15 min. The reaction mixture was partitioned between EtOAc and brine. The aqueous layer was extracted with EtOAc (3×) and the combined organics was dried (Na2SO4) and concentrated. The crude product was chromatographed through a Redi-Sep® pre-packed silica gel column (40 g), eluting with a gradient of 0% to 50% EtOAc in hexane, to provide N-(4-(3-(tetrahydro-2H-pyran-3-ylamino)pyrazin-2-yloxy)phenyl)benzo[d]thiazol-2-amine as off-white solid. MS (ESI, pos. ion) m/z: 420.0 (M+1). IC50 (uM) ++++.

Workup

  1. customThe reaction mixture was partitioned between EtOAc and brine
  2. extractionThe aqueous layer was extracted with EtOAc (3×)
  3. dry with materialthe combined organics was dried (Na2SO4)
  4. concentrationconcentrated
  5. customThe crude product was chromatographed through a Redi-Sep® pre-packed silica gel column (40 g)
  6. washeluting with a gradient of 0% to 50% EtOAc in hexane

Sources & evidence

ORD record
ord-d6a4c356b649413fbd39fdd25f15566e
Source dataset
uspto-grants-2011_11
Patent number
US08053438B2

Reaction notes

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