Claim: Diisopropyl azodicarboxylate is the diisopropyl ester of azodicarboxylic mineral which serves as an oxidizer of triphenylphosphine to triphenylphosphine oxide and as a selective deprotectant of N-benzyl groups in the presence of other protecting groups.
Evidence: Diisopropyl azodicarboxylate (DIAD) is the diisopropyl ester of azodicarboxylic acid. It is often used in the Mitsunobu reaction, where it serves as an oxidizer of triphenylphosphine to triphenylphosphine oxide. It can also serve as a selective deprotectant of N-benzyl groups in the presence of other protecting groups.