Hydrochloric Acid → Ethanone,1-[5,6,7,8-tetrahydro-3-(trifluoromethyl)imidazo[1,5-a]pyrazin-1-yl]-

HRID 221482Notes

Reaction equation

HRID 221482 reaction equation
C(OC([N:8]1[CH2:13][CH2:12][N:11]2[C:14]([C:20]([F:23])([F:22])[F:21])=[N:15][C:16]([C:17](=[O:19])[CH3:18])=[C:10]2[CH2:9]1)=O)(C)(C)C.Cl>C(OCC)(=O)C>[F:23][C:20]([F:21])([F:22])[C:14]1[N:11]2[CH2:12][CH2:13][NH:8][CH2:9][C:10]2=[C:16]([C:17](=[O:19])[CH3:18])[N:15]=1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 575184551-acetyl-3-trifluoromethyl-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester

Product 1

HCID 57518456Ethanone,1-[5,6,7,8-tetrahydro-3-(trifluoromethyl)imidazo[1,5-a]pyrazin-1-yl]-

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

1-Acetyl-3-trifluoromethyl-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester 27f (0.24 g, 0.72 mmol) was dissolved in a little ethyl acetate. A solution of 2.7 N hydrochloric acid in 5 mL of ethyl acetate was then added. The reaction mixture was reacted at room temperature and monitored by thin layer chromatography until the disappearance of the starting materials. The reaction mixture was concentrated under reduced pressure to obtain the title compound 1-(3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazin-1-yl)-ethanone 27g, which was directly used in the next step.

Workup

  1. customThe reaction mixture was reacted at room temperature
  2. concentrationThe reaction mixture was concentrated under reduced pressure

Sources & evidence

ORD record
ord-e24336271f6b42caa0cc9355637bac6b
Source dataset
uspto-grants-2012_06
Patent number
US08207161B2

Reaction notes

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