Sulfamic Acid → 7-Cyclopentyloxy-2-methylbenzo[b]furan-4-carboxylic acid

Participants

Reaction Steps

To a well stirred solution of 7-cyclopentyloxy-2-methylbenzo[b]furan-4-carboxaldehyde (55.0 g, 0.225 moles), sulphamic acid (76.0 g, 0.787 moles) in acetone (600 mL) was added a solution of sodium chlorite (51.0 g, 0.562 moles) in water (150 mL) at 0-5° C. and stirred for 5-6 hrs. Ice cold water (1.0 L) was added to reaction mixture; solid separated was filtered and purified by acid-base technique to get 40.0 g of pure product.

Provenance & Evidence