Hydrochloric Acid → (R)-7-[3-tert-butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid

HRID 221430

Reaktionsgleichung

Reaktionsgleichung von HRID 221430
C[O:2][C:3]([C:5]1[N:6]=[C:7]([C:36]([F:39])([F:38])[F:37])[N:8]2[CH2:13][CH2:12][N:11]([C:14](=[O:35])[CH2:15][C@H:16]([NH:27][C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[CH2:17][C:18]3[CH:23]=[C:22]([F:24])[C:21]([F:25])=[CH:20][C:19]=3[F:26])[CH2:10][C:9]=12)=[O:4].[OH-].[Na+].Cl>CO>[C:31]([O:30][C:28]([NH:27][C@H:16]([CH2:17][C:18]1[CH:23]=[C:22]([F:24])[C:21]([F:25])=[CH:20][C:19]=1[F:26])[CH2:15][C:14]([N:11]1[CH2:12][CH2:13][N:8]2[C:7]([C:36]([F:38])([F:39])[F:37])=[N:6][C:5]([C:3]([OH:4])=[O:2])=[C:9]2[CH2:10]1)=[O:35])=[O:29])([CH3:34])([CH3:32])[CH3:33]

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 59548953(R)-7-[3-tert-Butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid methyl ester

Produkt 1

HCID 59548952(R)-7-[3-tert-butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acidAusbeute 98,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

(R)-7-[3-tert-Butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid methyl ester 1n (2.0 g, 3.5 mmol) was dissolved in 50 mL of methanol under stirring, and 4 N sodium hydroxide solution (30 mL) was added to the solution. The reaction mixture was reacted at room temperature for an hour until thin lay chromatography showed the starting material disappeared, and was adjusted to pH 3 with a 2 N hydrochloric acid solution. The reaction mixture was extracted with ethyl acetate (50 mL×4), and the combined organic phase was dried over anhydrous magnesium sulfate, filtered, and concentrated under reduced pressure to obtain the title compound (R)-7-[3-tert-butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid 2a (1.9 g) as a light yellow solid.

Aufarbeitung

  1. customThe reaction mixture was reacted at room temperature for an hour
  2. extractionThe reaction mixture was extracted with ethyl acetate (50 mL×4)
  3. dry with materialthe combined organic phase was dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-4ea698ee7aa649f7a1fa5c9c970047eb
Quelldatensatz
uspto-grants-2012_06
Patentnummer
US08207161B2

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