Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where protected amine functionalities are required. The tert-butoxycarbonyl (Boc) group serves as a protecting group for the amine, allowing selective reaction at other sites during multi-step syntheses. The dimethylamino group can act as a directing group in metal-catalyzed reactions or be further modified to introduce additional functional groups. Commonly employed in the preparation of bioactive molecules, including central nervous system agents and receptor modulators, due to the stability and ease of deprotection of the Boc group under mild acidic conditions.