Palladium-Catalyzed C-N Coupling in the Synthesis of 1,4-Benzodiazepines Fused with 5-Membered Carbo- and Heterocycles

Abstract: In this review, we have focused our attention on Pd-catalyzed amination and arylation reactions for the construction of various benzodiazepine scaffolds. It includes numerous types of synthetic strategies like C-H arylation, Pd-catalyzed carbonylation, and Buchwald Hartwig coupling. To synthesize different functionalized benzodiazepines, the domino processes as intra- or intermolecular reactions are developed as an eco-friendly and effective tool. Benzodiazepines exhibit several biological activities and play a valuable role in medicinal and pharmaceutical chemistry. This review article mainly focuses on synthesizing a 1,4- benzodiazepine nucleus fused with 5-membered carbo- and heterocycles in the presence of palladium catalysts.