Hydrochloric Acid → (R)-4-{7-[3-amino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carbonyl}-piperazin-2-one hydrochloride

HRID 221462Notes

Reaction equation

HRID 221462 reaction equation
C(OC(=O)[NH:7][C@H:8]([CH2:34][C:35]1[CH:40]=[C:39]([F:41])[C:38]([F:42])=[CH:37][C:36]=1[F:43])[CH2:9][C:10](=[O:33])[N:11]1[CH2:16][CH2:15][N:14]2[C:17]([C:29]([F:32])([F:31])[F:30])=[N:18][C:19]([C:20]([N:22]3[CH2:27][CH2:26][NH:25][C:24](=[O:28])[CH2:23]3)=[O:21])=[C:13]2[CH2:12]1)(C)(C)C.[ClH:45]>C(OCC)(=O)C>[ClH:45].[NH2:7][C@H:8]([CH2:34][C:35]1[CH:40]=[C:39]([F:41])[C:38]([F:42])=[CH:37][C:36]=1[F:43])[CH2:9][C:10]([N:11]1[CH2:16][CH2:15][N:14]2[C:17]([C:29]([F:30])([F:32])[F:31])=[N:18][C:19]([C:20]([N:22]3[CH2:27][CH2:26][NH:25][C:24](=[O:28])[CH2:23]3)=[O:21])=[C:13]2[CH2:12]1)=[O:33]

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 57518439HCID 57518439, compound

Product 1

HCID 44194140(R)-4-{7-[3-amino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carbonyl}-piperazin-2-one hydrochlorideYield 93%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

(R)-[3-Oxo-3-[1-(3-oxo-piperazine-1-carbonyl)-3-trifluoromethyl-5,6-dihydro-8H-imidazo[1,5-a]pyrazin-7-yl]-1-(2,4,5-trifluoro-benzyl)-propyl]-carbamic acid tert-butyl ester 19a (0.14 g, 0.22 mmol) and 2 mL of ethyl acetate were added into the reaction flask. A solution of 2.3 N hydrochloric acid in 4 mL of ethyl acetate was then added to the flask. The reaction mixture was reacted at room temperature overnight 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 (R)-4-{7-[3-amino-4-(2,4,5-trifluorophenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carbonyl}-piperazin-2-one hydrochloride 19 (0.12 g, yield 93%) as a white solid.

Workup

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

Sources & evidence

ORD record
ord-2418319371af4096bb8169ba8932413b
Source dataset
uspto-grants-2012_06
Patent number
US08207161B2

Reaction notes

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