Trifluoroacetic acid → HCID 46244494, compound

HRID 1803852Notes

Reaction equation

HRID 1803852 reaction equation
[NH2:1][C:2]1[CH:29]=[C:28]([N:30]([CH2:32][CH2:33][CH2:34][N:35]([CH3:37])[CH3:36])[CH3:31])[CH:27]=[CH:26][C:3]=1[C:4]([NH:6][C:7]1[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([O:16][CH2:17][C:18]3[CH:23]=[C:22]([F:24])[CH:21]=[C:20]([F:25])[CH:19]=3)[CH:14]=2)[NH:9][N:8]=1)=[O:5].[O:38]1[CH2:43][CH2:42][C:41](=O)[CH2:40][CH2:39]1.C(O)(C(F)(F)F)=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.C[N+](C)(C)C>C(Cl)Cl>[F:24][C:22]1[CH:23]=[C:18]([CH:19]=[C:20]([F:25])[CH:21]=1)[CH2:17][O:16][C:13]1[CH:14]=[C:15]2[C:10](=[CH:11][CH:12]=1)[NH:9][N:8]=[C:7]2[NH:6][C:4](=[O:5])[C:3]1[CH:26]=[CH:27][C:28]([N:30]([CH2:32][CH2:33][CH2:34][N:35]([CH3:36])[CH3:37])[CH3:31])=[CH:29][C:2]=1[NH:1][CH:41]1[CH2:42][CH2:43][O:38][CH2:39][CH2:40]1

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 121599Tetrahydro-4H-pyran-4-oneHCID 13696215Tetramethylammonium Triacetoxyborohydride (>90%)HCID 46244400HCID 46244400, compound

Product 1

HCID 46244494HCID 46244494, compoundYield 46.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

2-Amino-N-[5-(3,5-difluoro-benzyloxy)-1H-indazol-3-yl]-4-[(3-dimethylamino-propyl)-methyl-amino]-benzamide (150 mg, 0.29 mmol) in DCM (4 mL) was treated, at 4° C., under a nitrogen atmosphere, with tetrahydro-4H-pyran-4-one (0.34 mL, 0.37 mmol), TFA (0.23 mL, 2.95 mmol) and finally with tetramethylammonium triacetoxyborohydride ((204 mg, 0.74 mmol). After 1.5 hours DCM, was added (25 mL) and the organic layer was washed with water (25 mL), saturated NaHCO3 solution (25 mL) and brine. After drying over anhydrous sodium sulfate, removal of the solvent and purification of the crude over silica gel (DCM: 7N NH3 in MeOH 9:1), 80 mg of title compound were obtained in 46% yield.

Workup

  1. additionwas added (25 mL)
  2. washthe organic layer was washed with water (25 mL), saturated NaHCO3 solution (25 mL) and brine
  3. dry with materialAfter drying over anhydrous sodium sulfate, removal of the solvent and purification of the crude over silica gel (DCM: 7N NH3 in MeOH 9:1)

Sources & evidence

ORD record
ord-9e154a28d7094433988c9965663bf759
Source dataset
uspto-grants-2013_01
Patent number
US08354399B2

Reaction notes

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