Imidazole → HCID 59463439, compound

HRID 2261341Notes

Reaction equation

HRID 2261341 reaction equation
[OH:1][CH2:2][C:3]1[O:7][N:6]=[C:5]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH:4]=1.N1C=CN=C1.[Si:18](Cl)([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:20])[CH3:19].O>CN(C)C=O>[Si:18]([O:1][CH2:2][C:3]1[O:7][N:6]=[C:5]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH:4]=1)([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:20])[CH3:19]

Participants

6

Reactant 4

HCID 795ImidazoleHCID 962WaterHCID 28928tert-Butyldimethylsilyl chlorideHCID 8027233Ethyl 5-(hydroxymethyl)isoxazole-3-carboxylate

Product 1

HCID 59463439HCID 59463439, compoundYield 100.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

14.22 g of ethyl 5-(hydroxymethyl)-isoxazole-3-carboxylate was dissolved in 80 ml of N,N-dimethylformamide, and 6.13 g of imidazole and 13.57 g of t-butyldimethylsilyl chloride were then added. The mixture was stirred at room temperature for 10 hours. After water was added, the reaction mixture was extracted with methyl-t-butyl ether. The organic layer was washed with water, dried over anhydrous magnesium sulfate, filtered and then concentrated under reduced pressure to obtain 23.82 g of ethyl 5-(t-butyldimethylsilanyloxymethyl)-isoxazole-3-carboxylate.

Workup

  1. extractionthe reaction mixture was extracted with methyl-t-butyl ether
  2. washThe organic layer was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-e2e9052774764584bd2f1389108b2898
Source dataset
uspto-grants-2010_12
Patent number
US07846956B2

Reaction notes

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