Methyl iodide → 3-Fluoro-2-methoxybenzaldehyde

To an acetonitrile (50 mL) solution containing 3.01 g (21.5 mmol) of commercially available 3-fluoro-2-hydroxybenzaldehyde were added 5.92 g (42.8 mmol) of potassium carbonate and 6.66 mL (107 mmol) of methyl iodide, and the mixture was stirred at 90° C. for 3 hours. After allowing to stand at room temperature overnight, the reaction mixture was poured into water, and extracted with ethyl acetate. The organic layer was successively washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was removed, and the obtained residue was purified by silica gel column chromatography (Wako gel C-100, hexane-ethyl acetate, gradient) to obtain 3.22 g of a crude product of 3-fluoro-2-methoxybenzaldehyde.

1. waitto stand at room temperature overnight
2. extractionextracted with ethyl acetate
3. washThe organic layer was successively washed with water and brine
4. dry with materialdried over anhydrous magnesium sulfate
5. customThe solvent was removed
6. customthe obtained residue was purified by silica gel column chromatography (Wako gel C-100, hexane-ethyl acetate, gradient)

ORDレコード

ord-adb3fca026824d1988e823a7c7a68ad2

出典データセット

uspto-grants-2009_10

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07608563B2