Trifluoroacetic acid → HCID 178486185, compound

HRID 1943412Notes

Reaction equation

HRID 1943412 reaction equation
[NH2:1][C@H:2]1[CH2:7][CH2:6][C@H:5]([NH:8][C:9]2[CH:10]=[C:11]([N:28]([CH:38]3[CH2:40][CH2:39]3)CC3C=CC(OC)=CC=3)[C:12]3[N:13]([C:15]([C:18]([NH:20][C:21]4[CH:26]=[CH:25][N:24]=[CH:23][C:22]=4[F:27])=[O:19])=[CH:16][N:17]=3)[N:14]=2)[CH2:4][CH2:3]1.CCN(C(C)C)C(C)C.[CH3:50][N:51]([CH3:56])[S:52](Cl)(=[O:54])=[O:53].C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH:38]1([NH:28][C:11]2[C:12]3[N:13]([C:15]([C:18]([NH:20][C:21]4[CH:26]=[CH:25][N:24]=[CH:23][C:22]=4[F:27])=[O:19])=[CH:16][N:17]=3)[N:14]=[C:9]([NH:8][C@H:5]3[CH2:6][CH2:7][C@H:2]([NH:1][S:52](=[O:54])(=[O:53])[N:51]([CH3:56])[CH3:50])[CH2:3][CH2:4]3)[CH:10]=2)[CH2:40][CH2:39]1

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 81531DiisopropylethylamineHCID 83372Dimethylsulphamoyl chlorideHCID 178490952HCID 178490952, compound

Product 1

HCID 178486185HCID 178486185, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 6-((trans)-4-aminocyclohexylamino)-8-(cyclopropyl(4-methoxybenzyl)amino)-N-(3-fluoropyridin-4-yl)imidazo[1,2-b]pyridazine-3-carboxamide 8B (30 mg, 0.055 mmol) in CH2Cl2 (1 mL) was added DIEA (0.0062 mL, 0.035 mmol) and dimethylsulfamoyl chloride (1.5 mg, 10.45 μmol). The reaction mixture was stirred at room temperature for 2 hrs, concentrated, re-dissolved in TFA (0.849 mL, 11.02 mmol) and heated at 70° C. for 1 hr. The reaction mixture was concentrated and purified by HPLC (Phenomenex Axia Luna 5 micron 30×100 mm) 30% B (Solvent B=90% MeOH-10% H2O-0.1% TFA) to 100% B in A (Solvent A=10% MeOH-90% H2O-0.1% TFA)) to isolate the title compound, 8-(cyclopropylamino)-6-((trans-4-((dimethylsulfamoyl)amino)cyclohexyl)amino)-N-(3-fluoro-4-pyridinyl)imidazo[1,2-b]pyridazine-3-carboxamide, as a white solid (13.0 mg, 44.4%). LC/MS (Phenomenex Luna 5 micron C18 4.6×30 mm, 0 to 100 B in 2 min with 1 min hold time, Flow rate=5 mL/min, detection at 254 nm, Solvent A: 10% methanol/90% water/0.1% TFA; Solvent B: 10% water/90% methanol/0.1% TFA). Rt=1.61 (M+H=532.26). 1H NMR (400 MHz, DMSO-d6) δ ppm 11.39 (1H, s), 8.71 (1H, d, J=2.52 Hz), 8.49 (1H, t, J=6.17 Hz), 8.43 (1H, d, J=5.29 Hz), 8.00 (1H, s), 7.61 (1H, s), 7.28 (1H, d, J=8.06 Hz), 6.92 (1H, d, J=8.31 Hz), 5.98 (1H, s), 3.78 (1H, br. s.), 3.00 (2H, br. s.), 2.58-2.73 (6H, m), 2.01 (2H, br. s.), 1.90 (2H, br. s.), 1.26 (4H, d, J=13.09 Hz), 0.68-0.85 (2H, m), 0.51-0.69 (2H, m).

Workup

  1. concentrationconcentrated
  2. temperatureheated at 70° C. for 1 hr
  3. concentrationThe reaction mixture was concentrated
  4. custompurified by HPLC (Phenomenex Axia Luna 5 micron 30×100 mm) 30% B (Solvent B=90% MeOH-10% H2O-0.1% TFA) to 100% B in A (Solvent A=10% MeOH-90% H2O-0.1% TFA))

Sources & evidence

ORD record
ord-3ee9fc62e224455397b73c05150dfb2d
Source dataset
uspto-grants-2013_03
Patent number
US08389527B2

Reaction notes

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