Sodium hydride → 2,3-Dimethyl-4-((1-methyl-2,6,7-trioxabicyclo[2.2.2]oct-4-yl)methoxy)pyridine 1-oxide

HRID 1645576Notes

Reaction equation

HRID 1645576 reaction equation
[CH3:1][C:2]12[O:9][CH2:8][C:5]([CH2:10][OH:11])([CH2:6][O:7]1)[CH2:4][O:3]2.[H-].[Na+].Cl[C:15]1[CH:20]=[CH:19][N+:18]([O-:21])=[C:17]([CH3:22])[C:16]=1[CH3:23]>CS(C)=O>[CH3:22][C:17]1[C:16]([CH3:23])=[C:15]([O:11][CH2:10][C:5]23[CH2:4][O:3][C:2]([CH3:1])([O:7][CH2:6]2)[O:9][CH2:8]3)[CH:20]=[CH:19][N+:18]=1[O-:21]

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 98774464-Chloro-2,3-dimethyl-1-oxidopyridin-1-iumHCID 13547990(1-Methyl-2,6,7-trioxabicyclo[2.2.2]octan-4-yl)methanol

Product 1

HCID 667755342,3-Dimethyl-4-((1-methyl-2,6,7-trioxabicyclo[2.2.2]oct-4-yl)methoxy)pyridine 1-oxideYield 104.8%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
60 °C

Procedure

To a dimethylsulfoxide solution (30 ml) of the (1-methyl-2,6,7-trioxabicyclo[2.2.2]oct-4-yl)methanol (4.5 g, 28.1 mmol) obtained in the step (24a), sodium hydride, in oil (1.29 g, 29.5 mmol as the content was regarded as 55%) was added at room temperature. To the mixture, 4-chloro-2,3-dimethylpyridine 1-oxide (3.99 g, 25.3 mmol) was added, which was stirred at 60° C. for 3 hours. After cooled to room temperature, the reaction mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/methanol) to obtain the title compound (7.46 g, yield: 81%) as a yellow oil.

Workup

  1. additionwas added at room temperature
  2. temperatureAfter cooled to room temperature
  3. concentrationthe reaction mixture was concentrated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/methanol)

Sources & evidence

ORD record
ord-ff3bcb013f8244dab1c869b0d6dbd460
Source dataset
uspto-grants-2012_02
Patent number
US08124780B2

Reaction notes

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