Hydrochloric Acid → 5-(2-Hydroxy-ethyl)-benzofuran-2-carboxylic acid (2-amino-phenyl)-amide

Participants

Reaction Conditions

Reaction Steps

To a solution of 75 mg (0.189 mmol) (2-{[5-(2-Hydroxy-ethyl)-benzofuran-2-carbonyl]-amino}-phenyl)-carbamic acid tert-butyl ester (58) in 3 ml THF were added 1892 μl of 4M solution of HCl in dioxane. The reaction was stirred at 55° C. for 2 h. The solvent was evaporated, ethylacetate was added and the organic phase was washed with saturated aqueous sodium bicarbonate solution and brine and dried over Na2SO4. The solvent was removed to give 45 mg (0.152 mmol) 5-(2-Hydroxy-ethyl)-benzofuran-2-carboxylic acid (2-amino-phenyl)-amide (55); exact MW calc'd [M+H]: 297.12; MW found [M+H]: 297.1.

Provenance & Evidence