Hydrogen Peroxide → Samidorphan

HRID 2384595Notes

Reaction equation

HRID 2384595 reaction equation
[CH:1]1([CH2:4][N:5]2[CH2:24][CH2:23][C@:12]34[C:13]5[C:14]6[O:22][C@H:11]3[C:10](=[O:25])[CH2:9][CH2:8][C@@:7]4([OH:26])[C@H:6]2[CH2:19][C:18]=5[CH:17]=[CH:16][C:15]=6[C:20]#[N:21])[CH2:3][CH2:2]1.C(=O)([O-])[O-:28].[K+].[K+].OO>CS(C)=O.C(Cl)Cl>[CH:1]1([CH2:4][N:5]2[CH2:24][CH2:23][C@:12]34[C:13]5[C:14]6[O:22][C@H:11]3[C:10](=[O:25])[CH2:9][CH2:8][C@@:7]4([OH:26])[C@H:6]2[CH2:19][C:18]=5[CH:17]=[CH:16][C:15]=6[C:20]([NH2:21])=[O:28])[CH2:3][CH2:2]1

Participants

6

Reactant 3

HCID 784Hydrogen PeroxideHCID 11430Potassium CarbonateHCID 15425895HCID 15425895, compound

Product 1

HCID 10021946SamidorphanYield 71.4%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 6344DichloromethaneSolvent

Procedure

To an ice/water cooled suspension of (5a)-17-(cyclopropylmethyl)-14-hydroxy-6-oxo-4,5-epoxymorphinan-3-carbonitrile [P2] (6.0 g, 17.1 mmol) and potassium carbonate (7.09 g, 51.37 mmol) in DMSO (120 mL) was added hydrogen peroxide (25 mL, 35 wt. % in H2O) drop wise at a rate to ensure the temperature remained below 20° C. The mixture was stirred for 2 hours then diluted with DCM (800 mL). The solution was washed with water (3×500 mL) before the organic phase was dried (MgSO4). Filtration and removal of the solvent under reduced pressure gave crude product that was purified by trituration with methanol giving (5a)-17-(cyclopropylmethyl)-14-hydroxy-6-oxo-4,5-epoxymorphinan-3-carboxamide [P3] (4.50 g, 71% yield); LC/MS (r.t. 10.1 minutes [5 to 95% B]), 369 (M+H)+.

Workup

  1. customremained below 20° C
  2. washThe solution was washed with water (3×500 mL) before the organic phase
  3. dry with materialwas dried (MgSO4)
  4. filtrationFiltration and removal of the solvent under reduced pressure
  5. customgave crude product that
  6. customwas purified by trituration with methanol

Sources & evidence

ORD record
ord-675e2dfb2bdc4f28a8596c5cdb60cca5
Source dataset
uspto-grants-2012_09
Patent number
US08263807B2

Reaction notes

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