HCID 86650256, compound → [5-(3-Amino-phenyl)-5-difluoromethyl-5,6-dihydro-2H-[1,4]oxazin-3-yl]-carbamic acid tert-butyl ester

HRID 221692Notes

Reaction equation

HRID 221692 reaction equation
[C:1]([O:5][C:6](=[O:26])[NH:7][C:8]1[CH2:9][O:10][CH2:11][C:12]([C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([N:23]=[N+]=[N-])[CH:18]=2)([CH:14]([F:16])[F:15])[N:13]=1)([CH3:4])([CH3:3])[CH3:2]>C(O)C.C1COCC1.[Pd]>[C:1]([O:5][C:6](=[O:26])[NH:7][C:8]1[CH2:9][O:10][CH2:11][C:12]([C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([NH2:23])[CH:18]=2)([CH:14]([F:16])[F:15])[N:13]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 1

HCID 86650256HCID 86650256, compound

Product 1

HCID 66665306[5-(3-Amino-phenyl)-5-difluoromethyl-5,6-dihydro-2H-[1,4]oxazin-3-yl]-carbamic acid tert-butyl ester

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of [5-(3-azido-phenyl)-5-difluoromethyl-5,6-dihydro-2H-[1,4]oxazin-3-yl]-carbamic acid tert-butyl ester (1.71 g, 4.65 mmol) in 22 ml ethanol and 12 ml THF was hydrogenated with Pd/C (10%) (3 hrs, r.t.) The mixture was filtered through Celite, and the filtrate was evaporated and the residue was purified by chromatography on silica gel (cyclohexane/ethyl acetate) to yield the title compound as colorless solid.

Workup

  1. filtrationwas filtered through Celite
  2. customthe filtrate was evaporated
  3. customthe residue was purified by chromatography on silica gel (cyclohexane/ethyl acetate)

Sources & evidence

ORD record
ord-80501b9c14dd488981e04c36f5c7a99f
Source dataset
uspto-grants-2012_06
Patent number
US08207164B2

Reaction notes

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