Multiple choice ____________ protects amines from electrophiles. Carboxybenzyl Chloromethyl Di-tert-butyl dicarbonate Methylthiomethyl ether Reveal answer Fill a bubble to check yourself A Correct answer Explanation Carboxybenzyl is an amine protecting group in organic synthesis. It is commonly used in peptide synthesis and is formed by reacting an amine with benzyl chloroformate and a weak base. It is used to protect amines from electrophiles.