Trifluoroacetic acid → HCID 178480983, compound

HRID 432201Notes

Reaction equation

[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([C@H:25]3[CH2:30][CH2:29][C@@H:28]([N:31]4[CH2:36][CH2:35][N:34]([CH3:37])[CH2:33][CH2:32]4)[CH2:27][CH2:26]3)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][C:14]([NH:17]C(=O)OC(C)(C)C)=[CH:13][CH:12]=3)[C:3]=12.FC(F)(F)C(O)=O>ClCCl>[NH2:17][C:14]1[CH:13]=[CH:12][C:11]([C:10]2[C:3]3[C:4](=[N:5][CH:6]=[N:7][C:2]=3[NH2:1])[N:8]([C@H:25]3[CH2:30][CH2:29][C@@H:28]([N:31]4[CH2:32][CH2:33][N:34]([CH3:37])[CH2:35][CH2:36]4)[CH2:27][CH2:26]3)[N:9]=2)=[CH:16][CH:15]=1

Participants

Conditions

Temperature: 0 °C

Procedure

Cis-tert-butyl N-(4-{4-amino-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}phenyl)carbamate (4.0 g, 0.0079 mol) was triturated in anhydrous dichloromethane (75 mL) and the reaction mixture was cooled to 0° C. Trifluoroacetic acid (10 mL) was added dropwise and the resulting solution was warmed up to ambient temperature and stirred under an atmosphere of nitrogen for 1.5 hours. The solvents were removed under reduced pressure, the residue suspended in water (70 mL) and basified with saturated aqueous sodium bicarbonate solution. It was extracted with dichloromethane (3×150 mL), the combined organic extracts were dried with magnesium sulfate and the solvent was removed under reduced pressure to yield cis-3-(4-aminophenyl)-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (3.0 g, 0.00739 mol) as an off-white solid.

Workup

temperaturethe resulting solution was warmed up to ambient temperature
customThe solvents were removed under reduced pressure
extractionIt was extracted with dichloromethane (3×150 mL)
dry with materialthe combined organic extracts were dried with magnesium sulfate
customthe solvent was removed under reduced pressure

Sources & evidence

ORD record: ord-a655968ab3e44f97af8573fdbbfe186f
Source dataset: uspto-grants-2003_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06660744B1

Reaction notes

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