Hydrochloric Acid → 3-amino-6-(4-{3-[(3-methoxypropyl)amino]propyl}phenyl)-N-pyridin-3-ylpyrazine-2-carboxamide

HRID 217778Notes

Reaction equation

HRID 217778 reaction equation
[NH2:1][C:2]1[N:3]=[CH:4][C:5]([C:17]2[CH:22]=[CH:21][C:20]([CH2:23][CH2:24][CH2:25][N:26]([CH2:34][CH2:35][CH2:36][O:37][CH3:38])C(=O)OC(C)(C)C)=[CH:19][CH:18]=2)=[N:6][C:7]=1[C:8](=[O:16])[NH:9][C:10]1[CH:11]=[N:12][CH:13]=[CH:14][CH:15]=1.Cl.[OH-].[Na+]>CCOC(C)=O.O>[NH2:1][C:2]1[C:7]([C:8]([NH:9][C:10]2[CH:11]=[N:12][CH:13]=[CH:14][CH:15]=2)=[O:16])=[N:6][C:5]([C:17]2[CH:18]=[CH:19][C:20]([CH2:23][CH2:24][CH2:25][NH:26][CH2:34][CH2:35][CH2:36][O:37][CH3:38])=[CH:21][CH:22]=2)=[CH:4][N:3]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 66678170Tert-butyl (3-{4-[5-amino-6-(pyridin-3-ylcarbamoyl)pyrazin-2-yl]phenyl}propyl)(3-methoxypropyl)carbamate

Product 1

HCID 533023753-amino-6-(4-{3-[(3-methoxypropyl)amino]propyl}phenyl)-N-pyridin-3-ylpyrazine-2-carboxamide

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of the product of step (v) (300 g, 0.58 mol) in 4N—HCl in EtOAc (3 L) was stirred for 3 hours. The suspension was filtered and the yellow solid obtained. The solid was dissolved in H2O (1.2 L). 2N—NaOH was added dropwise into the solution to basified to pH=11. The mixture was extracted with a mixture of THF and EtOAc (5 L×2, 1:1) and the organic phase washed with aqueous 10%—NaCl and concentrated in vacuo. The subtitle compound (vi) was obtained (pale yellow solid, 210 g).

Workup

  1. filtrationThe suspension was filtered
  2. customthe yellow solid obtained
  3. extractionThe mixture was extracted with a mixture of THF and EtOAc (5 L×2, 1:1)
  4. washthe organic phase washed with aqueous 10%—NaCl
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-3034a541a6194adcba2ea74e4c39f84d
Source dataset
uspto-grants-2012_06
Patent number
US08198285B2

Reaction notes

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