Benzoyl chloride → (1R,2S)-1-(3-chloro-4-cyano-2-methylphenylamino)-1-(5-phenyl-1,3,4-oxadiazol-2-yl)propan-2-yl benzoate

HRID 470898Notes

Reaction equation

HRID 470898 reaction equation
[Cl:1][C:2]1[C:9]([CH3:10])=[C:8]([NH:11][C@@H:12]([C:16]2[O:17][C:18]([C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=[N:19][N:20]=2)[C@@H:13]([OH:15])[CH3:14])[CH:7]=[CH:6][C:3]=1[C:4]#[N:5].[C:27](Cl)(=[O:34])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>N1C=CC=CC=1.C(Cl)Cl>[C:27]([O:15][C@@H:13]([CH3:14])[C@@H:12]([NH:11][C:8]1[CH:7]=[CH:6][C:3]([C:4]#[N:5])=[C:2]([Cl:1])[C:9]=1[CH3:10])[C:16]1[O:17][C:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[N:19][N:20]=1)(=[O:34])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1

Participants

5

Reactant 2

HCID 7412Benzoyl chlorideHCID 442006592-chloro-4-((1R,2S)-2-hydroxy-1-(5-phenyl-1,3,4-oxadiazol-2-yl)propylamino)-3-methylbenzonitrile

Product 1

HCID 67005905(1R,2S)-1-(3-chloro-4-cyano-2-methylphenylamino)-1-(5-phenyl-1,3,4-oxadiazol-2-yl)propan-2-yl benzoateYield 88.1%

Reagents, catalysts & solvents 2

HCID 1049PyridineSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 2-chloro-4-((1R,2S)-2-hydroxy-1-(5-phenyl-1,3,4-oxadiazol-2-yl)propylamino)-3-methylbenzonitrile (200 mg, 0.54 mmol) in pyridine (1.0 mL) and CH2Cl2 (7.0 mL) was added benzoyl chloride (94 μL, 0.81 mmol). Upon complete addition the reaction mixture was stirred for 60 h, then quenched with 10% aqueous HCl (15 mL). The mixture was partitioned between H2O (35 mL) and CH2Cl2 (40 mL). The aqueous layer was extracted with CH2Cl2 (35 mL). The combined organic extracts were washed with NaHCO3 (35 mL), dried (Na2SO4), filtered and concentrated under reduced pressure to provide an off white solid, which was purified by flash chromatography over silica gel (20-40% EtOAc in hexanes) to provide the title compound as a colourless solid (225 mg, 88%): 1H NMR (400 MHz, CDCl3, □ in ppm) 8.05 (dm, J=7.2 Hz, 2H), 7.91 (dm, J=7.2 Hz, 2H), 7.62 (tt, J=1.2, 7.4 Hz, 1H), 7.55-7.41 (m, 5H), 7.39 (d, J=8.6 Hz, 1H), 6.84 (d, J=8.8 Hz, 1H), 5.81 (pentet, J=6.3 Hz, 1H), 5.38 (d, J=7.6 Hz, 1H), 5.21 (dd, J=5.9, 7.4 Hz, 1H), 2.31 (s, 3H), 1.50 (d, J=6.5 Hz, 3H).

Workup

  1. additionUpon complete addition the reaction mixture
  2. customquenched with 10% aqueous HCl (15 mL)
  3. customThe mixture was partitioned between H2O (35 mL) and CH2Cl2 (40 mL)
  4. extractionThe aqueous layer was extracted with CH2Cl2 (35 mL)
  5. washThe combined organic extracts were washed with NaHCO3 (35 mL)
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customto provide an off white solid, which
  10. customwas purified by flash chromatography over silica gel (20-40% EtOAc in hexanes)

Sources & evidence

ORD record
ord-350cec6b313949e9bb2a07e7db520aa6
Source dataset
uspto-grants-2014_01
Patent number
US08629167B2

Reaction notes

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