Methylamine → 5-(2-Fluoro-4-iodophenylamino)-N-methylimidazo[1,5-a]pyrazine-6-carboxamide

HRID 2064039Notes

Reaction equation

HRID 2064039 reaction equation
CO[C:3]([C:5]1[N:6]=[CH:7][C:8]2[N:9]([CH:20]=[N:21][CH:22]=2)[C:10]=1[NH:11][C:12]1[CH:17]=[CH:16][C:15]([I:18])=[CH:14][C:13]=1[F:19])=[O:4].[CH3:23][NH2:24].C1COCC1>CO.C(OCC)(=O)C>[F:19][C:13]1[CH:14]=[C:15]([I:18])[CH:16]=[CH:17][C:12]=1[NH:11][C:10]1[N:9]2[CH:20]=[N:21][CH:22]=[C:8]2[CH:7]=[N:6][C:5]=1[C:3]([NH:24][CH3:23])=[O:4]

Participants

6

Reactant 3

HCID 6329MethylamineHCID 8028TetrahydrofuranHCID 591401715-(2-Fluoro-4-iodo-phenylamino)-imidazo[1,5-a]pyrazine-6-carboxylic acid methyl ester

Product 1

HCID 441359845-(2-Fluoro-4-iodophenylamino)-N-methylimidazo[1,5-a]pyrazine-6-carboxamideYield 44.8%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 5-(2-fluoro-4-iodo-phenylamino)-imidazo[1,5-a]pyrazine-6-carboxylic acid methyl ester (108 mg, 0.26 mmol) in anhydrous methanol (0.5 mL) was added 2M methylamine in THF (1.3 mL, 2.6 mmol, 10 eq), and the reaction mixture was stirred at room temperature under N2 for 3 days. The reaction mixture was diluted with ethyl acetate (50 mL). The organic layer was washed with water and brine, dried (Na2SO4), filtered and concentrated in vacuo. The resultant residue was subjected to reverse-phase preparative HPLC [Gemini-NX (100× 30 mm, 10 micron), 0.1% FA in water/acetonitrile, 5-85%, ramp time in 10 minutes, flow at 60 ml/min] to afford the title compound as a white solid (48.3 mg, 44.8%). 1H NMR (DMSO-d6, 400 MHz) δ ppm 10.89 (s, 1H), 8.95 to 8.91 (m, 1H), 8.86 (s, 1H), 7.92 (s, 1H), 7.88 (s, 1H), 7.76 (dd, J=8.4 Hz, 1.2 Hz, 1H), 7.44 (d, J=6.8 Hz, 1H), 6.51 (t, J=6.8 Hz, 1H), 2.81 (d, 4.0 Hz, 3H); LCMS (method E2): RT=12.23 min, [M+H]+=412.

Workup

  1. washThe organic layer was washed with water and brine
  2. dry with materialdried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customwas subjected to reverse-phase preparative HPLC [Gemini-NX (100× 30 mm, 10 micron), 0.1% FA in water/acetonitrile, 5-85%, ramp time in 10 minutes, flow at 60 ml/min]

Sources & evidence

ORD record
ord-90e2c2beca534d2586055cabddc0ac5d
Source dataset
uspto-grants-2012_10
Patent number
US08288408B2

Reaction notes

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