Trifluoroacetic acid methylene chloride → HCID 178488236, compound

HRID 432464

Reaction equation

HRID 432464 reaction equation
FC(F)(F)C(O)=O.ClCCl.[NH2:11][C:12]1[N:17]=[CH:16][N:15]=[C:14]2[N:18]([C@H:38]3[CH2:43][CH2:42][C@H:41]([N:44]4[CH2:49][CH2:48][N:47]([CH3:50])[CH2:46][CH2:45]4)[CH2:40][CH2:39]3)[N:19]=[C:20]([C:21]3[C:26]([F:27])=[CH:25][C:24]([NH:28]C(=O)OC(C)(C)C)=[C:23]([O:36][CH3:37])[CH:22]=3)[C:13]=12>ClCCl>[NH2:28][C:24]1[C:23]([O:36][CH3:37])=[CH:22][C:21]([C:20]2[C:13]3[C:14](=[N:15][CH:16]=[N:17][C:12]=3[NH2:11])[N:18]([C@H:38]3[CH2:43][CH2:42][C@H:41]([N:44]4[CH2:45][CH2:46][N:47]([CH3:50])[CH2:48][CH2:49]4)[CH2:40][CH2:39]3)[N:19]=2)=[C:26]([F:27])[CH:25]=1

Participants

4

Reactant 2

HCID 21863450Trifluoroacetic acid methylene chlorideHCID 178488238HCID 178488238, compound

Product 1

HCID 178488236HCID 178488236, compoundYield 87.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of trifluoroacetic acid/dichloromethane (20:80, 7 mL) was added to a solution of trans-tert-butyl N-(4-{4-amino-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-5-fluoro-2-methoxyphenyl)carbamate (250 mg, 0.451 mmol) in dichloromethane (4.0 mL) at 0° C. After 15 minutes, the ice-bath was removed and the reaction mixture was stirred at room temperature for 4 hours. Solvent was then evaporated and the residue was dissolved in dichloromethane. Saturated sodium bicarbonate was added to adjust the pH to 8. The layers were separated and the aqueous layer was extracted with dichloromethane. The combined organic layer was washed with brine, dried over MgSO4, filtered and evaporated give trans-3-(4-amino-2-fluoro-5-methoxyphenyl)-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (179 mg, 87%). 1H NMR (CDCl3) δ 1.56 (m, 2H), 2.15 (m, 7H), 2.31 (s, 3H), 2.51 (m, 4H), 2.67 (m, 4H), 3.88 (s, 3H), 4.16 (bs, 2H), 4.74 (m, 1H), 5.64 (bs, 2H), 6.56 (d, J=10.84 Hz, 1H), 6.88 (d, J=6.55 Hz, 1H), 8.33 (s, 1H). LCMS (Thermoquest AQA single Quad MS, Finnigan HPLC-Column: Genesis, C18, 3 um, 33×4.6 mm. Eluents: 30% B/A to 95% B/A in 4.5 min. (B: acetonitrile, A: 50 mM ammonia acetate buffer, pH 4.5), 0.8 mL/min.): MH+ =455.2, Rt=0.63 min.

Workup

  1. customthe ice-bath was removed
  2. customSolvent was then evaporated
  3. dissolutionthe residue was dissolved in dichloromethane
  4. additionSaturated sodium bicarbonate was added
  5. customThe layers were separated
  6. extractionthe aqueous layer was extracted with dichloromethane
  7. washThe combined organic layer was washed with brine
  8. dry with materialdried over MgSO4
  9. filtrationfiltered
  10. customevaporated

Sources & evidence

ORD record
ord-5cee2e3810534d9d981630247bb42b10
Source dataset
uspto-grants-2003_12
Patent number
US06660744B1

Linked notes

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