Hydrochloric Acid → N-(2-fluoro-4-chloro-5-cyclopentyloxyphenyl)-N'-(2-bromoethyl)-3,4,5,6-tetrahydrophthalamide

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Reaction Steps

2-Aminoethyl bromide hydrobromide (0.280 g, 1.37 mmol) and potassium carbonate (0.110 g, 0.796 mmol) were placed into a round bottom flask (25 cc), followed by stirring at room temperature in an acetonitrile solvent until the generation of gas ceased. Then, N-(2-fluoro-4-chloro-5-cyclopentyloxyphenyl)-3,4,5,6-tetrahydroisophthalimide (0.500 g, 1.37 mmol) was added thereto, followed by stirring for 30 minutes at room temperature. After completion of the reaction, the reaction mixture was poured into 1N hydrochloric acid (20 ml), and the mixture was extracted with ethyl acetate (30 ml x 3 portions). After drying the organic layer over anhydrous magnesium sulfate, the drying agent was removed, and the solvent was distilled off under reduced pressure. The precipitated crystals were isolated by filtration, washed with hexane and dried to obtain N-(2-fluoro-4-chloro-5-cyclopentyloxyphenyl)-N'-(2-bromoethyl)-3,4,5,6-tetrahydrophthalamide as white crystals (0.644 g, 96.4% yield).

Provenance & Evidence