Methyl iodide → Methyl 3-cyano-4-methoxybenzoate

HRID 1421768Notes

Reaction equation

HRID 1421768 reaction equation
[CH3:1][O:2][C:3](=[O:13])[C:4]1[CH:9]=[CH:8][C:7]([OH:10])=[C:6]([C:11]#[N:12])[CH:5]=1.[H-].[Na+].CI.[CH3:18]COC(C)=O>CN(C=O)C>[CH3:1][O:2][C:3](=[O:13])[C:4]1[CH:9]=[CH:8][C:7]([O:10][CH3:18])=[C:6]([C:11]#[N:12])[CH:5]=1

Participants

6

Reactant 4

HCID 6328Methyl iodideHCID 8857Ethyl AcetateHCID 24758Sodium hydrideHCID 11769089Methyl 3-cyano-4-hydroxybenzoate

Product 1

HCID 2801011Methyl 3-cyano-4-methoxybenzoate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

3-cyano-4-hydroxybenzoic acid methyl ester from step 1 (1 g, 3.6 mmol) was dissolved in DMF (18 ml) and treated with NaH (290 g, 7.2 mmol) and CH3I (450 μl, 7.2 mmol). The reaction mixture was stirred at room temperature for 24 hours. EtOAc was added to the mixture and extracted with 5% citric acid (2×10 mL), saturated NaHCO3 (2×10 mL) and brine (1×10 mL). The organic layer was dried (MgSO4), filtered, and concentrated to yield the desired product.

Workup

  1. extractionextracted with 5% citric acid (2×10 mL), saturated NaHCO3 (2×10 mL) and brine (1×10 mL)
  2. dry with materialThe organic layer was dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-24d5702524d44c468ed6dff94ce807df
Source dataset
uspto-grants-2000_06
Patent number
US06077853

Reaction notes

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