Hydrochloric Acid → (2R)-N-hydroxy-2-methyl-2-(methylsulfonyl)-4-[2-oxo-4-(2-phenylethyl)pyridin-1(2H)-yl]butanamide

HRID 709201Notes

Reaction equation

HRID 709201 reaction equation
Cl.[CH3:2][C@@:3]([S:31]([CH3:34])(=[O:33])=[O:32])([CH2:14][CH2:15][N:16]1[CH:21]=[CH:20][C:19]([CH2:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)=[CH:18][C:17]1=[O:30])[C:4]([NH:6][O:7]C1CCCCO1)=[O:5]>ClCCl.CO>[OH:7][NH:6][C:4](=[O:5])[C@:3]([CH3:2])([S:31]([CH3:34])(=[O:33])=[O:32])[CH2:14][CH2:15][N:16]1[CH:21]=[CH:20][C:19]([CH2:22][CH2:23][C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)=[CH:18][C:17]1=[O:30]

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 86671911(2R)-2-methyl-2-(methylsulfonyl)-4-[2-oxo-4-(2-phenylethyl)pyridin-1(2H)-yl]-N-(tetrahydro-2H-pyran-2-yloxy)butanamide

Product 1

HCID 57326597(2R)-N-hydroxy-2-methyl-2-(methylsulfonyl)-4-[2-oxo-4-(2-phenylethyl)pyridin-1(2H)-yl]butanamideYield 70.3%

Reagents, catalysts & solvents 1

HCID 21226129Dichloromethane methanolSolvent

Procedure

A solution of hydrochloric acid (1.0 mL, 4.0 M in 1,4-dioxane) was added to a solution of (2R)-2-methyl-2-(methylsulfonyl)-4-[2-oxo-4-(2-phenylethyl)pyridin-1(2H)-yl]-N-(tetrahydro-2H-pyran-2-yloxy)butanamide (14 mg, 0.029 mmol) in 5:1 dichloromethane-methanol (1.2 mL) at 0° C. After 2 h, the reaction was concentrated under reduced pressure. The resulting residue was triturated with 1:1 pentane-dichloromethane, filtered, washed with pentane, and dried under reduced pressure to provide a light pink solid (8 mg, 70%). MS (APCI) m/z 393.3 (M+1). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.51 (s, 3H) 2.00-2.14 (m, 1H) 2.24-2.36 (m, 1H) 2.63-2.74 (m, 2H) 2.78-2.88 (m, 2H) 3.06 (s, 3H) 3.58-3.73 (m, 1H) 3.94-4.08 (m, 1H) 6.16-6.26 (m, 2H) 7.11-7.32 (m, 5H) 7.55 (d, J=7.41 Hz, 1H) 11.14 (br s, 1H).

Workup

  1. concentrationthe reaction was concentrated under reduced pressure
  2. customThe resulting residue was triturated with 1:1 pentane-dichloromethane
  3. filtrationfiltered
  4. washwashed with pentane
  5. customdried under reduced pressure

Sources & evidence

ORD record
ord-6563fba06708468cb7cfa42b5b50a97d
Source dataset
uspto-grants-2015_11
Patent number
US09180123B2

Reaction notes

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