Ethyl Acetate → HCID 117733829, compound

HRID 718659Notes

Reaction equation

HRID 718659 reaction equation
F[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][CH:3]=1.Cl.[NH2:12][C@@H:13]([CH:21]([CH3:23])[CH3:22])[C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15].C([O-])([O-])=O.[K+].[K+].CCOC(C)=O>CS(C)=O>[CH3:22][CH:21]([CH3:23])[C@H:13]([NH:12][C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][CH:3]=1)[C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15]

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 9590p-FluoronitrobenzeneHCID 11430Potassium CarbonateHCID 12490702tert-butyl (2S)-2-amino-3-methylbutanoate hydrochloride

Product 1

HCID 117733829HCID 117733829, compound

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of 1-fluoro-4-nitrobenzene (3.0 g, 21 mmol) and tert-butyl (2S)-2-amino-3-methylbutanoate hydrochloride (5.4 g, 26 mmol) in DMSO (20 mL) was added K2CO3 (8.8 g, 64 mmol). The reaction mixture was stirred at 100° C. for 8 h. EtOAc (200 mL) was added. The organic layer was washed with water and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (EtOAc/petroleum ether (1:10 v/v)) to obtain compound 55a as a yellow solid. Mass Spectrum (LCMS, ESI pos.): Calcd. for C15H22N2O4: 295.2 (M+H). Found 295.2.

Workup

  1. washThe organic layer was washed with water and brine
  2. dry with materialdried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by flash column chromatography on silica gel (EtOAc/petroleum ether (1:10 v/v))

Sources & evidence

ORD record
ord-a68f8a2364744d868becbd53e83a8a0c
Source dataset
uspto-grants-2015_11
Patent number
US09193736B2

Reaction notes

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