Sodium methanesulfinate → HCID 66727370, compound

HRID 1698252Notes

Reaction equation

HRID 1698252 reaction equation
Br[C:2]1[CH:7]=[C:6]([C@H:8]([NH:11][S:12]([C:14]([CH3:17])([CH3:16])[CH3:15])=[O:13])[CH2:9][CH3:10])[CH:5]=[CH:4][N:3]=1.[CH3:18][S:19]([O-:21])=[O:20].[Na+]>CS(C)=O.[NH4+].[Cl-].C([O-])(O)=O.[Na+].CCOC(C)=O.[Cu]I>[CH3:18][S:19]([C:2]1[CH:7]=[C:6]([C@@H:8]([NH:11][S:12]([C:14]([CH3:17])([CH3:16])[CH3:15])=[O:13])[CH2:9][CH3:10])[CH:5]=[CH:4][N:3]=1)(=[O:21])=[O:20]

Participants

8

Reactant 2

HCID 2733271Sodium methanesulfinateHCID 86640805HCID 86640805, compound

Product 1

HCID 66727370HCID 66727370, compound

Reagents, catalysts & solvents 5

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 679Dimethyl SulfoxideSolventHCID 8857Ethyl AcetateSolventHCID 25517Ammonium ChlorideSolventHCID 516892Sodium BicarbonateSolvent

Conditions

Temperature
130 °C

Procedure

To a solution of 2-methyl-propane-2-sulfinic acid [(R)-1-(2-bromo-pyridin-4-yl)-propyl]-amide (6.00 g, 18.8 mmol) in DMSO (240 ml) was added sodium methanesulfinate (6.77 g, 56.4 mmol) and copper (I) iodide (10.7 g, 56.4 mmol) The mixture was then heated at 130° C. for 45 minutes. The reaction was diluted with saturated aqueous NH4Cl (90 mL), saturated NaHCO3 (10 mL), and EtOAc (150 mL), and sonicated for 10 minutes to dissolve all the solids. The phases were separated and the organic layer was washed with a 9:1 mixture of saturated NH4Cl-saturated NaHCO3 (100 mL). The combined aqueous phases were extracted with EtOAc (150 mL). Combined organic layers were washed with brine, dried over sodium sulfate, filtered and concentrated. The crude material was purified by silica gel chromatography eluting with a gradient of 0-100% EtOAc in hexanes to afford 2-methyl-propane-2-sulfinic acid [(S)-1-(2-methanesulfonyl-pyridin-4-yl)-propyl]amide as a clear thick oil.

Workup

  1. customsonicated for 10 minutes
  2. dissolutionto dissolve all the solids
  3. customThe phases were separated
  4. washthe organic layer was washed with a 9:1 mixture of saturated NH4Cl-saturated NaHCO3 (100 mL)
  5. extractionThe combined aqueous phases were extracted with EtOAc (150 mL)
  6. washCombined organic layers were washed with brine
  7. dry with materialdried over sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe crude material was purified by silica gel chromatography
  11. washeluting with a gradient of 0-100% EtOAc in hexanes

Sources & evidence

ORD record
ord-fdb8b192fb9243e7893c34a077e66931
Source dataset
uspto-grants-2012_04
Patent number
US08163918B2

Reaction notes

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