Dichloromethane → (R)-N-(4-(3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-1H-pyrazole-4-carboxamide hydrochloride

HRID 875785Notes

Reaction equation

HRID 875785 reaction equation
[Br:1][C:2]1[C:3]([N:28]2[CH2:33][CH2:32][CH2:31][C@@H:30]([NH:34]C(=O)OC(C)(C)C)[CH2:29]2)=[C:4]2[C:10]([NH:11][C:12]([C:14]3[CH:15]=[N:16][N:17](CC4C=CC(OC)=CC=4)[CH:18]=3)=[O:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.C(O)(C(F)(F)F)=O.C(Cl)[Cl:50]>>[ClH:50].[NH2:34][C@@H:30]1[CH2:31][CH2:32][CH2:33][N:28]([C:3]2[C:2]([Br:1])=[CH:7][N:6]=[C:5]3[NH:8][CH:9]=[C:10]([NH:11][C:12]([C:14]4[CH:18]=[N:17][NH:16][CH:15]=4)=[O:13])[C:4]=23)[CH2:29]1

Participants

4

Reactant 3

HCID 6344DichloromethaneHCID 6422Trifluoroacetic acidHCID 67045242(R)-tert-butyl 1-(5-bromo-3-(1-(4-methoxybenzyl)-1H-pyrazole-4-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

Product 1

HCID 67045504(R)-N-(4-(3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-1H-pyrazole-4-carboxamide hydrochlorideYield 50%

Conditions

Temperature
65 °C

Procedure

A solution of (R)-tert-butyl 1-(5-bromo-3-(1-(4-methoxybenzyl)-1H-pyrazole-4-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (120 mg, 0.192 mmol) in DCM (3 mL) was treated with TFA (1 mL) at room temperature for 30 minutes. The reaction was then concentrated in vacuo and azeotroped with toluene. The resulting residue was dissolved in neat TFA (5 mL) and stirred at 65° C. for 1 hour. The reaction mixture was then concentrated in vacuo, and the residue obtained was purified by reverse phase HPLC (Gilson) to provide (R)—N-(4-(3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-1H-pyrazole-4-carboxamide hydrochloride (50 mg, 50% yield). 1H NMR (400 MHz, D2O) δ 8.26 (s, 1H), 8.12 (s, 2H), 7.33 (s, 1H), 3.67-3.63 (m, 1H), 3.41-3.37 (m, 1H), 3.30-3.27 (m, 1H), 3.19-3.10 (m, 2H), 1.90-1.83 (m, 1H), 1.68-1.65 (m, 1H), 1.55-1.51 (m, 1H), 1.36-1.34 (m, 1H); LCMS (APCI+) m/z 404, 406 (M+H)+.

Workup

  1. concentrationThe reaction was then concentrated in vacuo
  2. customazeotroped with toluene
  3. dissolutionThe resulting residue was dissolved in neat TFA (5 mL)
  4. concentrationThe reaction mixture was then concentrated in vacuo
  5. customthe residue obtained
  6. customwas purified by reverse phase HPLC (Gilson)

Sources & evidence

ORD record
ord-90662e61da834641bae1ea378a5a291b
Source dataset
uspto-grants-2015_03
Patent number
US08981085B2

Reaction notes

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