Trifluoroacetic acid → HCID 53262673, compound

HRID 1509292Notes

Reaction equation

HRID 1509292 reaction equation
[C:1]1([C:7]2[C:25]([C:26]3[CH:31]=[CH:30][C:29]([C:32]4([NH:36]C(=O)OC(C)(C)C)[CH2:35][CH2:34][CH2:33]4)=[CH:28][CH:27]=3)=[N:24][C:10]3[O:11][CH2:12][C:13]4[N:14]([C:15]([C:18]5[CH:23]=[CH:22][N:21]=[CH:20][CH:19]=5)=[N:16][N:17]=4)[C:9]=3[CH:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(O)(C(F)(F)F)=O>ClCCl>[C:1]1([C:7]2[C:25]([C:26]3[CH:27]=[CH:28][C:29]([C:32]4([NH2:36])[CH2:35][CH2:34][CH2:33]4)=[CH:30][CH:31]=3)=[N:24][C:10]3[O:11][CH2:12][C:13]4[N:14]([C:15]([C:18]5[CH:19]=[CH:20][N:21]=[CH:22][CH:23]=5)=[N:16][N:17]=4)[C:9]=3[CH:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86683659HCID 86683659, compound

Product 1

HCID 53262673HCID 53262673, compoundYield 88.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Tert-butyl (1-(4-(8-phenyl-1-(pyridin-4-yl)-4H-pyrido[2,3-b][1,2,4]triazolo[4,3-d][1,4]oxazin-7-yl)phenyl)cyclobutyl)carbamate (14 mg, 0.024 mmol) was dissolved in dichloromethane (1 ml); TFA (0.5 ml) was added at room temperature and the resulting mixture was stirred for 30 seconds. The solution was immediately concentrated to dryness under reduced pressure. The residue was dissolved in diethyl ether (˜2 ml) and concentrated to dryness under reduced pressure. This was repeated three times. The residue was then slurred in diethyl ether (2 ml) and after settling the supernatant solvent was removed by pipette. This was repeated three times. The residue was then slurred in n-hexane (2 ml) and after settling the supernatant solvent was removed by pipette. This was repeated three times. The remaining solvent was removed under reduced pressure and dried to give the desired product as an off-white solid (10 mg, 87% yield). LCMS (Method A) RT=3.66 min, M+H+=474. 1H NMR (500 MHz, CDCl3): 8.77 (2H, d), 8.79 (2H, d), 7.41 (2H, d), 7.33 (1H, s), 7.32 (2H, d), 7.18-7.13 (3H, m), 6.96 (2H, dd), 5.66 (2H, s), 2.70-2.61 (2H, m), 2.52-2.43 (2H, m), 2.19-2.08 (1H, m), 1.92-1.82 (1H, m).

Workup

  1. concentrationThe solution was immediately concentrated to dryness under reduced pressure
  2. dissolutionThe residue was dissolved in diethyl ether (˜2 ml)
  3. concentrationconcentrated to dryness under reduced pressure
  4. customwas removed by pipette
  5. customwas removed by pipette
  6. customThe remaining solvent was removed under reduced pressure
  7. customdried

Sources & evidence

ORD record
ord-0631a6e911ca4852b1d47ded6174919e
Source dataset
uspto-grants-2015_12
Patent number
US09221838B2

Reaction notes

Loading…