A molecule possesses both a carboxylic acid () group and an ester () group. Which specialized reduci — Aldehydes Ketones and Carboxylic Acids Chemistry Question

💡 Solution & Explanation

$NaBH_4$ is too mild to reduce either group. $LiAlH_4$ is too harsh and reduces both acids and esters. DIBAL-H primarily reduces esters/nitriles to aldehydes at low temps. However, Diborane ($B_2H_6$) uniquely and selectively reduces carboxylic acids to primary alcohols even in the presence of sensitive groups like esters.