Recent developments in the synthesis and synthetic applications of borane–amines

generated borane, salt metathesis, and Lewis base exchange, are discussed in detail with emphasis on recent protocols and borane-ammonia preparation techniques. Applications of borane-amines in organic synthesis where they serve as selective and more easily handled alternatives to traditional borane reagents include reduction, reductive amination, and hydroboration reactions. Recent progress demonstrates that beyond their use as practical borane alternatives, borane-amines offer distinct mechanistic and synthetic utility in transfer hydrogenation, borylation, B-H insertion, as sources of amine-ligated boryl radicals, and as amine surrogates in amidation methodologies. This feature article aims to consolidate recent developments in well-known reactions and emerging methodologies, as well as underscore the growing role of borane-amines as adaptable tools in synthetic organic chemistry.