(4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-3-[2-nitro-5-(trifluoromethoxy)benzyl]-1,3-oxazolidin-2-one → (4S,5R)-3-[2-amino-5-(trifluoromethoxy)benzyl]-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one

HRID 1028597Notes

Reaction equation

HRID 1028597 reaction equation
[F:1][C:2]([F:36])([F:35])[C:3]1[CH:4]=[C:5]([C@H:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([O:26][C:27]([F:30])([F:29])[F:28])[CH:23]=[CH:22][C:21]=3[N+:31]([O-])=O)[C@H:14]2[CH3:34])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1>CCOC(C)=O.O=[Pt]=O>[NH2:31][C:21]1[CH:22]=[CH:23][C:24]([O:26][C:27]([F:30])([F:29])[F:28])=[CH:25][C:20]=1[CH2:19][N:15]1[C@@H:14]([CH3:34])[C@@H:13]([C:5]2[CH:6]=[C:7]([C:9]([F:11])([F:12])[F:10])[CH:8]=[C:3]([C:2]([F:1])([F:35])[F:36])[CH:4]=2)[O:17][C:16]1=[O:18]

Participants

4

Reactant 1

HCID 86603424(4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-3-[2-nitro-5-(trifluoromethoxy)benzyl]-1,3-oxazolidin-2-one

Product 1

HCID 57617867(4S,5R)-3-[2-amino-5-(trifluoromethoxy)benzyl]-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one

Reagents, catalysts & solvents 2

HCID 345198Adams' catalystCatalystHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-3-[2-nitro-5-(trifluoromethoxy)benzyl]-1,3-oxazolidin-2-one (1.07 g, 2.01 mmol) in EtOAc (30 mL) was added PtO2 (100 mg, 0.44 mmol). The reaction was placed under a H2 atmosphere (balloon) and stirred vigorously. After 1 hour, the catalyst was removed by filtration, and the filtrate was concentrated. Purification of the residue by flash chromatography (5 to 40% EtOAc/hexanes) afforded (4S,5R)-3-[2-amino-5-(trifluoromethoxy)benzyl]-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one. Rf=0.45 (40% EtOAc/hexanes). LCMS=503.2 (M+1)+. 1H NMR (CDCl3, 600 MHz) δ 7.89 (s, 1H), 7.75 (s, 2H), 7.03 (dd, J=8.7, 2.0 Hz, 1H), 6.90 (d, J=2.1 Hz, 1H), 6.67 (d, J=8.7 Hz, 1H), 5.67 (d, J=8.5 Hz, 1H), 4.73 (d, J=15.4 Hz, 1H), 4.35 (bs, 2H), 4.09 (d, J=15.4 Hz, 1H), 4.04 (m, 1H), 0.78 (d, J=6.6 Hz, 3H).

Workup

  1. customthe catalyst was removed by filtration
  2. concentrationthe filtrate was concentrated
  3. customPurification of the residue by flash chromatography (5 to 40% EtOAc/hexanes)

Sources & evidence

ORD record
ord-1389a23a57844d20b2d373ef237b30ca
Source dataset
uspto-grants-2014_05
Patent number
US08735435B2

Reaction notes

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