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Hydrogen chloride-ethyl acetate → 8-(cyclohexylmethoxy)-2-methyl-N-(piperidin-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride

HRID 64462
Notes
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Reaction equation

HRID 64462 reaction equation
[CH:1]1([CH2:7][O:8][C:9]2[C:10]3[N:11]([C:15]([C:19]([NH:21][CH:22]4[CH2:27][CH2:26][N:25](C(OC(C)(C)C)=O)[CH2:24][CH2:23]4)=[O:20])=[C:16]([CH3:18])[N:17]=3)[CH:12]=[CH:13][CH:14]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[ClH:35].C(OCC)(=O)C>C(OCC)(=O)C>[ClH:35].[ClH:35].[CH:1]1([CH2:7][O:8][C:9]2[C:10]3[N:11]([C:15]([C:19]([NH:21][CH:22]4[CH2:23][CH2:24][NH:25][CH2:26][CH2:27]4)=[O:20])=[C:16]([CH3:18])[N:17]=3)[CH:12]=[CH:13][CH:14]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 21866389Hydrogen chloride-ethyl acetateHCID 86713481Tert-butyl 4-({[8-(cyclohexylmethoxy)-2-methylimidazo[1,2-a]pyridin-3-yl]carbonyl}amino)piperidine-1-carboxylate

Product 1

HCID 867134798-(cyclohexylmethoxy)-2-methyl-N-(piperidin-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 1.44 g of tert-butyl 4-({[8-(cyclohexylmethoxy)-2-methylimidazo[1,2-a]pyridin-3-yl]carbonyl}amino)piperidine-1-carboxylate in 15 ml of ethyl acetate was added 3.8 ml of a 4 M hydrogen chloride/ethyl acetate solution, followed by stirring for 1 day. The reaction mixture was concentrated under reduced pressure, and to the obtained residue were added ethyl acetate and ethanol. The resulting solid was collected by filtration and dried to obtain 1.29 g of 8-(cyclohexylmethoxy)-2-methyl-N-(piperidin-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionto the obtained residue were added ethyl acetate and ethanol
  3. filtrationThe resulting solid was collected by filtration
  4. customdried

Sources & evidence

ORD record
ord-09423c52cb4b4d87ab5775b0cd6f9b2b
Source dataset
uspto-grants-2016_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09447090B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes