Abstract¡ªCarboxylate-benzyl and nitro-benzyl groups used in phenols protection were selectively debenzylated with 3¨C25 equiv
of Mg in methanol at room temperature. Good yields of the desired phenols were obtained within 3¨C10 h from a wide variety of
O-(carboxylate-benzyl)- or O-(nitro-benzyl)-phenols. Selective O-debenzylation was possible in the presence of O-(carboxylatebenzyl)-
or O-(nitro-benzyl)-phenols with Mg/MeOH.