Nitric Acid → HCID 11614252, compound

HRID 1994548Notes

Reaction equation

HRID 1994548 reaction equation
[F:1][C:2]([F:40])([F:39])[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]([C:26]([F:29])([F:28])[F:27])[CH:23]=[CH:22][C:21]=3[C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][C:31]=3[O:36][CH3:37])[C@H:14]2[CH3:38])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.[N+:41]([O-])([OH:43])=[O:42]>CC(O)=O>[F:40][C:2]([F:1])([F:39])[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]([C:26]([F:28])([F:29])[F:27])[CH:23]=[CH:22][C:21]=3[C:30]3[CH:35]=[C:34]([N+:41]([O-:43])=[O:42])[CH:33]=[CH:32][C:31]=3[O:36][CH3:37])[C@H:14]2[CH3:38])[CH:6]=[C:7]([C:9]([F:11])([F:10])[F:12])[CH:8]=1

Participants

4

Reactant 2

HCID 944Nitric Acid2×HCID 11699822HCID 11699822, compound

Product 1

HCID 11614252HCID 11614252, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a solution of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-{[2′-methoxy-4-(trifluoromethyl)biphenyl-2-yl]methyl}-4-methyl-1,3-oxazolidin-2-one (example 143) (159.4 mg, 0.276 mmol) in HOAc (5 mL) was added HNO3 (1.5 mL). After 45 minutes, additional HNO3 (1.5 mL) was added. 45 minutes later, the reaction was quenched by pouring into ice water (30 mL). The mixture was extracted with EtOAc (75 mL), and the organic layer was washed with 1 N NaOH, saturated NaHCO3, and brine (25 mL each). The organic layer was dried over Na2SO4, filtered, and concentrated. Purification of the residue by flash chromatography on silica gel (8 to 40% EtOAc/hexanes) afforded (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-{[2′-methoxy-5′-nitro-4-(trifluoromethyl)biphenyl-2-yl]methyl}-4-methyl-1,3-oxazolidin-2-one. Rf=0.11 (25% EtOAc/hexanes). LCMS=623.1 (M+1)+. 1H NMR (CDCl3, 500 MHz, rotamers present) δ 8.34 (m, 1H), 8.10 (m, 1H), 7.85 (d, J=6.9 Hz, 1H), 7.61-7.71 (m, 4H), 7.40 (m, 1H), 7.11 (m, 1H), 5.66 (d, J=8.0 Hz), 5.28 (d, J=8.2 Hz), 4.89-4.94 (m, 1H), 3.74-4.09 (m, 5H), 0.61 (d, J=6.6 Hz), 0.47 (d, J=6.5 Hz).

Workup

  1. custom45 minutes later, the reaction was quenched
  2. additionby pouring into ice water (30 mL)
  3. extractionThe mixture was extracted with EtOAc (75 mL)
  4. washthe organic layer was washed with 1 N NaOH, saturated NaHCO3, and brine (25 mL each)
  5. dry with materialThe organic layer was dried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customPurification of the residue by flash chromatography on silica gel (8 to 40% EtOAc/hexanes)

Sources & evidence

ORD record
ord-4e9e551f7dc54ff59fd7291909c06c8c
Source dataset
uspto-grants-2010_01
Patent number
US07652049B2

Reaction notes

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