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

💡 Solution & Explanation

$NaBH_4$ is too weak for acids. $LiAlH_4$ is a harsh agent that will indiscriminately reduce both the acid and the ester. Diborane ($B_2H_6$) is a highly selective electrophilic reducing agent that easily reduces $-COOH$ without touching esters.