Sodium Hydroxide → rac-(1R,2R)-2-(4-bromophenyl)cyclopropane-1-carboxylic acid

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Reaction Steps

NaOH 4N (20 mL) was added to a solution of (trans)-ethyl 2-(4-bromophenyl)cyclopropanecarboxylate (Intermediate I, 4 g, 0.0149 mol), in Methanol (40 mL) and stirred at rt for 2 h. After completion of reaction, checked by TLC, the solvent was evaporated and the residue was diluted with water (50 mL), acidified with HCl 4 N solution, the solid formed was filtered and dried to get (trans)-2-(4-bromophenyl)cyclopropanecarboxylic acid (2.59 g, 72%), as a white solid.

Provenance & Evidence