HCID 131734051, compound → Trifluoroacetic acid

HRID 713364Notes

Reaction equation

HRID 713364 reaction equation
[OH:1][C:2]([C:4]([F:7])([F:6])[F:5])=[O:3].C([N:15]1[CH2:24][CH2:23][C:22]2[C:17](=[N:18][C:19]([NH:40][C@@H:41]([CH2:43][CH3:44])[CH3:42])=[C:20]([N:25]3[CH2:30][CH2:29][CH:28]([O:31][C:32]4[CH:37]=[CH:36][C:35]([F:38])=[CH:34][C:33]=4[F:39])[CH2:27][CH2:26]3)[N:21]=2)[CH2:16]1)C1C=CC=CC=1>C1COCC1.[OH-].[OH-].[Pd+2]>[C@H:41]([NH:40][C:19]1[N:18]=[C:17]2[CH2:16][NH:15][CH2:24][CH2:23][C:22]2=[N:21][C:20]=1[N:25]1[CH2:30][CH2:29][CH:28]([O:31][C:32]2[CH:37]=[CH:36][C:35]([F:38])=[CH:34][C:33]=2[F:39])[CH2:27][CH2:26]1)([CH2:43][CH3:44])[CH3:42].[C:2]([OH:3])([C:4]([F:7])([F:6])[F:5])=[O:1]

Participants

5

Reactant 1

HCID 131734051HCID 131734051, compound

Product 2

HCID 6422Trifluoroacetic acidYield 425.7%HCID 118159134HCID 118159134, compound

Reagents, catalysts & solvents 2

HCID 9942167Palladium hydroxideCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A solution of (R)-6-benzyl-N-(sec-butyl)-2-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-3-amine TFA salt (174.6 mg, 0.281 mmol) in THF (2.81 mL) was treated with Pd(OH)2 (20 wt %, 59.2 mg, 0.084 mmol). Hydrogen gas (balloon) was bubbled through the reaction mixture for 5 min. The vent needle was removed and the reaction was allowed to stir at room temperature under hydrogen atmosphere for 1 h. The reaction mixture was opened to air and filtered through a pad of Celite™, eluting with EtOAcMeOH. The filtrate was collected and concentrated under reduced pressure to give (R)—N-(sec-butyl)-2-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-3-amine as a TFA salt (136.4 mg) as a yellow oil, which was carried forward without additional purification. ESI-MS m/z [M+H]+ 418.5.

Workup

  1. customHydrogen gas (balloon) was bubbled through the reaction mixture for 5 min
  2. customThe vent needle was removed
  3. filtrationfiltered through a pad of Celite™
  4. washeluting with EtOAcMeOH
  5. customThe filtrate was collected
  6. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-26dd88d413cb44a2b3a7c6a1f94ee8f8
Source dataset
uspto-grants-2015_11
Patent number
US09181249B2

Reaction notes

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