Ethyl Acetate → HCID 67499619, compound

HRID 1428357Notes

Reaction equation

HRID 1428357 reaction equation
[Cl:1][C:2]1[C:6]([N:7]([CH2:14][CH3:15])[C:8](=[O:13])[CH2:9][CH2:10][S:11][CH3:12])=[CH:5][N:4]([C:16]2[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=2)[N:3]=1.B1([O-])O[O:23]1.O.O.O.O.[Na+].C([O-])(O)=O.[Na+].C(OCC)(=O)C>C(O)(=O)C>[Cl:1][C:2]1[C:6]([N:7]([CH2:14][CH3:15])[C:8](=[O:13])[CH2:9][CH2:10][S:11]([CH3:12])=[O:23])=[CH:5][N:4]([C:16]2[CH:17]=[N:18][CH:19]=[CH:20][CH:21]=2)[N:3]=1

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 516892Sodium BicarbonateHCID 23693097Sodium;3-oxidodioxaborirane;tetrahydrateHCID 67500280HCID 67500280, compound

Product 1

HCID 67499619HCID 67499619, compoundYield 40%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
60 °C

Procedure

To N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-(methylthio)propanamide (0.08 g, 0.24 mmol) in glacial acetic acid (0.82 mL) was added sodium perborate tetrahydrate (0.05 g, 0.25 mmol), and the mixture was heated at 60° C. for 1 hour. The reaction mixture was carefully poured into a separatory funnel containing saturated aqueous NaHCO3 resulting in gas evolution. When the gas evolution had ceased, ethyl acetate was added and the layers were separated. The aqueous layer was extracted twice with ethyl acetate, and all the organic layers were combined, dried over MgSO4, filtered and concentrated under reduced pressure. The crude material was purified by silica gel chromatography (0-10% methanol/dichloromethane) to give the desired product as a clear oil (0.03 g, 40%): IR (thin film) 1655 cm−1; 1H NMR (400 MHz, CDCl3) δ 8.95 (t, J=9.2 Hz, 1H), 8.63 (dd, J=4.7, 1.4 Hz, 1H), 8.20-7.86 (m, 2H), 7.59-7.33 (m, 1H), 3.73 (ddt, J=20.5, 13.4, 6.8 Hz, 2H), 3.23-3.06 (m, 1H), 2.94-2.81 (m, 1H), 2.74-2.62 (m, 2H), 2.59 (s, 3H), 1.25-1.07 (m, 3H); ESIMS m/z 341 ([M+H]+).

Workup

  1. additionThe reaction mixture was carefully poured into a separatory funnel
  2. customthe layers were separated
  3. extractionThe aqueous layer was extracted twice with ethyl acetate
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe crude material was purified by silica gel chromatography (0-10% methanol/dichloromethane)

Sources & evidence

ORD record
ord-c09dff9b502a439f8da3170eff000d5b
Source dataset
uspto-grants-2015_01
Patent number
US08937083B2

Reaction notes

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