HCID 86650249, compound → [5-(3-Amino-phenyl)-5-methyl-5,6-dihydro-2H-[1,4]oxazin-3-yl]-carbamic acid tert-butyl ester

HRID 221667Notes

Reaction equation

HRID 221667 reaction equation
[C:1]([O:5][C:6](=[O:24])[NH:7][C:8]1[CH2:9][O:10][CH2:11][C:12]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([N:21]=[N+]=[N-])[CH:16]=2)([CH3:14])[N:13]=1)([CH3:4])([CH3:3])[CH3:2]>CCOC(C)=O.[Pd].CC([O-])=O.CC([O-])=O.[Pb+2]>[C:1]([O:5][C:6](=[O:24])[NH:7][C:8]1[CH2:9][O:10][CH2:11][C:12]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([NH2:21])[CH:16]=2)([CH3:14])[N:13]=1)([CH3:2])([CH3:3])[CH3:4]

Participants

4

Reactant 1

HCID 86650249HCID 86650249, compound

Product 1

HCID 66666030[5-(3-Amino-phenyl)-5-methyl-5,6-dihydro-2H-[1,4]oxazin-3-yl]-carbamic acid tert-butyl ester

Reagents, catalysts & solvents 2

HCID 131709914Lindlars catalystCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A solution of [5-(3-azido-phenyl)-5-methyl-5,6-dihydro-2H-[1,4]oxazin-3-yl]-carbamic acid tert-butyl ester (497 mg, 1.50 mmol) in EtOAc (37 ml) was hydrogenated using Lindlar catalyst (10 h, room temperature). The mixture was filtered through Celite, and the filtrate was evaporated under reduced pressure yielding the title compound in the form of a colourless solid. 1H-NMR (500 MHz, DMSO-d6): 9.57 (br, 1H), 6.97 (br, 1H), 6.55 (s, 1H), 6.52 (d, 1H), 6.45 (br, 1H), 5.08 (br, 2H), 4.40-4.30 (m, 2H), 3.75-3.45 (m, 2H), 1.47 (s, 3H), 1.39 (s, 9H); MS: 306 [(M+H)+].

Workup

  1. filtrationThe mixture was filtered through Celite
  2. customthe filtrate was evaporated under reduced pressure

Sources & evidence

ORD record
ord-7f458de562ad49638f042442fb7f994a
Source dataset
uspto-grants-2012_06
Patent number
US08207164B2

Reaction notes

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