Trifluoroacetic acid → Ammonium Acetate

HRID 2068434Notes

Reaction equation

HRID 2068434 reaction equation
F[C:2]([F:7])(F)[C:3]([OH:5])=[O:4].[N:8]1[CH:13]=[CH:12][N:11]=[CH:10][C:9]=1[C:14]1([NH2:17])[CH2:16][CH2:15]1.C(N(C(C)C)CC)(C)C.C(O[C:32]([N:34](C)[C:35]([C:37]1[C:38]([C:59]2[CH:64]=CC(F)=[CH:61][CH:60]=2)=[N:39][N:40]2[CH:45]=[CH:44][C:43]([C:46]3[C:47]([CH3:57])=[CH:48][C:49]([O:55][CH3:56])=[C:50]([CH:54]=3)[C:51](O)=[O:52])=[C:42]([F:58])[C:41]=12)=[O:36])=O)(C)(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.FC(F)(F)C(O)=O>ClCCl.CN(C=O)C>[C:3]([O-:5])(=[O:4])[CH3:2].[NH4+:8].[F:58][C:42]1[C:41]2[N:40]([N:39]=[C:38]([C:59]3[CH:60]=[CH:61][C:2]([F:7])=[CH:3][CH:64]=3)[C:37]=2[C:35]([NH:34][CH3:32])=[O:36])[CH:45]=[CH:44][C:43]=1[C:46]1[CH:54]=[C:50]([C:51](=[O:52])[NH:17][C:14]2([C:9]3[CH:10]=[N:11][CH:12]=[CH:13][N:8]=3)[CH2:16][CH2:15]2)[C:49]([O:55][CH3:56])=[CH:48][C:47]=1[CH3:57]

Participants

9

Reactant 5

HCID 6422Trifluoroacetic acidHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 67404879HCID 67404879, compoundHCID 67419172HCID 67419172, compound

Product 2

HCID 517165Ammonium AcetateHCID 46842607HCID 46842607, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution containing 1-(pyrazin-2-yl)cyclopropanamine 2,2,2-trifluoroacetate (0.014 g, 0.058 mmol), diisopropylethylamine (0.050 mL, 0.30 mmol), 5-(3-(tert-butoxycarbonyl(methyl)carbamoyl)-4-fluoro-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-5-yl)-2-methoxy-4-methylbenzoic acid (0.020 g, 0.036 mmol) and DMF (0.24 mL) was added HATU (0.027 g, 0.073 mmol) in one portion. The solution was maintained at room temperature for 15 minutes. Dichloromethane (0.25 mL) was then added followed by trifluoroacetic acid (0.078 mL, 1.0 mmol). The solution was maintained for an additional 15 min and concentrated. The resultant residue was purified using preparative HPLC (Waters-Xbridge, 50×100 mm, 5 micron, C18 column; 0.1M ammonium acetate, 0-100% B (B=5% H2O/CH3CN)/A (A=95% H2O/CH3CN), 15 min. gradient) afforded 4-fluoro-2-(4-fluorophenyl)-5-(4-methoxy-2-methyl-5-(1-(pyrazin-2-yl)cyclopropylcarbamoyl)phenyl)-N-methylpyrazolo[1,5-a]pyridine-3-carboxamide as a white solid. Preparative HPLC retention time: 10.6 min. 1H NMR (400 MHz, MeOD) δ ppm 8.70 (1H, d, J=1.51 Hz), 8.51 (1H, s), 8.50 (1H, dd, J=3.51, 1.76 Hz), 8.35 (1H, d, J=2.51 Hz), 7.84-7.90 (2H, m), 7.79 (1H, s), 7.17-7.26 (3H, m), 6.89 (1H, t, J=6.90 Hz), 4.09 (3H, s), 2.90 (3H, s), 2.36 (3H, s), 1.69-1.75 (2H, m), 1.41-1.46 (2H, m). LCMS: retention time: 1.942 min. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Phenomenex-Luna, 3 micron, C18, 2.0×30 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 4 mL/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 2 min, a hold time of 1 min, and an analysis time of 3 min where solvent A was 5% CH3OH/95% H2O/10 mM ammonium acetate and solvent B was 5% H2O/95% CH3OH/10 mM ammonium acetate. MS data was determined using a Micromass Platform for LC in electrospray mode. m/z 569 (MH+).

Workup

  1. temperatureThe solution was maintained for an additional 15 min
  2. concentrationconcentrated
  3. customThe resultant residue was purified

Sources & evidence

ORD record
ord-23d75cd5ff094a08a57fda81eea3c6ac
Source dataset
uspto-grants-2012_10
Patent number
US08293909B2

Reaction notes

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