Hydrochloric Acid → HCID 10297844, compound

HRID 861131Notes

Reaction equation

HRID 861131 reaction equation
[CH:1]1([NH:6][C:7]2[N:12]3[N:13]=[C:14]([C:28]4[CH:33]=[CH:32][CH:31]=[C:30]([N:34]=C(C5C=CC=CC=5)C5C=CC=CC=5)[CH:29]=4)[C:15]([C:16]4[CH:21]=[CH:20][N:19]=[C:18]([NH:22][CH:23]5[CH2:27][CH2:26][CH2:25][CH2:24]5)[N:17]=4)=[C:11]3[CH:10]=[CH:9][CH:8]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.C(=O)(O)[O-]>O1CCCC1.CCOCC>[NH2:34][C:30]1[CH:29]=[C:28]([C:14]2[C:15]([C:16]3[CH:21]=[CH:20][N:19]=[C:18]([NH:22][CH:23]4[CH2:24][CH2:25][CH2:26][CH2:27]4)[N:17]=3)=[C:11]3[CH:10]=[CH:9][CH:8]=[C:7]([NH:6][CH:1]4[CH2:5][CH2:4][CH2:3][CH2:2]4)[N:12]3[N:13]=2)[CH:33]=[CH:32][CH:31]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 769Bicarbonate IonHCID 57494736HCID 57494736, compound

Product 1

HCID 10297844HCID 10297844, compoundYield 93%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolvent2×HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-{3-[(diphenylmethylene)amino]phenyl}-pyrazolo[1,5-a]pyridin-7-amine (2.61 g, 4.22 mmol) in tetrahydrofuran (30 mL) at 0° C. was added 4N hydrochloric acid (20 mL) dropwise. Subsequently, the reaction mixture was stirred for 5 minutes. The reaction mixture was diluted with ether, then saturated aqueous bicarbonate was added slowly till the ether layer turned clear. The resulting mixture was stirred for 30 minutes. The phases were separated, the organic phase was washed with water, brine and dried (magnesium sulfate). Filtration and concentration of the filtrate to a solid, followed by recrystallization from ethyl acetate-hexanes, gave 2-(3-aminophenyl)-N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]pyrazolo[1,5-a]pyridin-7-amine (1.78 g, 93%) as a pale yellow solid. 1H NMR (CDCl3): δ 7.92 (d, 1H), 7.82 (d, 1H), 7.32 (t, 1H), 7.22 (m, 2H), 7.00–6.94 (m, 2H), 6.78 (m, 1H), 6.34 (d, 1H), 6.04 (m, 2H), 4.38 (m, 1H), 4.00 (m, 1H), 3.75 (broad, 2H), 2.14–2.05 (m, 4H), 1.83–1.54 (m, 12H); MS m/z 454 (M+1).

Workup

  1. stirringThe resulting mixture was stirred for 30 minutes
  2. customThe phases were separated
  3. washthe organic phase was washed with water, brine
  4. dry with materialdried (magnesium sulfate)
  5. filtrationFiltration and concentration of the filtrate to a solid
  6. customfollowed by recrystallization from ethyl acetate-hexanes

Sources & evidence

ORD record
ord-e695110f36f84b0f8f90cf1af53783ec
Source dataset
uspto-grants-2006_12
Patent number
US07153855B2

Reaction notes

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