Potassium Carbonate → 5-(4-Fluoro-benzyloxy)-2-(2-methoxy-ethyl)-isoindole-1,3-dione

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Reaction Steps

A mixture of 5-hydroxy-2-(2-methoxy-ethyl)-isoindole-1,3-dione, from example 13a, (570 mg, 2.6 mmol), potassium carbonate (445 mg, 3.2 mmol) and 4-fluorobenzyl-bromide (526 mg, 2.8 mmol) in acetone (40 mL) was heated under reflux for 17 h. After cooling to room temperature, the mixture was filtered, evaporated and the residue was purified by crystallization from diethylether:heptane (1:2) to afford the title compound (560 mg, 66%) as a white solid. MS: m/e=330.4 (M+H+).

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