Perhalogenated silylboranes X2B–SiX3 (X = Cl, I) were prepared in three steps on gram scale. They enable catalyst-free olefin silaboration, including unique 1,1-addition to cyclohexene, with broad functionalization potential.
This review summarizes the recent advances in synthetic applications of silylboronates as silyl radical precursors, discusses the advantages and limitations of each method, and illustrates the synthetic chances still open for further exploration.
9-Borafluorene-based diboranes and silylboranes spontaneously add to C
C or C
C bonds. Despite their different charge and bond polarization, key orbital interactions of substrate activation are identical for both valence isoelectronic derivatives.
The advancements in heterocycle synthesis through BF3·OEt2 catalyzed/mediated cyclization of alkynes have been highlighted.
The review thoroughly examines recent progress in C–P bond formation reactions and considers the future directions in this area of research.