Phosphine–boranes have garnered growing interest for their potential in catalysis and as
building blocks for inorganic polymers. While various synthetic methods exist, flexibility
to introduce diverse substituents on the P centers remains limited. Our group reported
routes to monoalkylated phosphanylboranes starting from primary phosphanylboranes
or sodium phosphide. In this work, we extend these strategies to enable the synthesis of
dialkylated phosphanylboranes bearing either identical or different substituents on the P
atoms. This expanded methodology provides access to a broader scope of diverse P centers,
a key factor influencing the reactivity and applications of phosphine–borane derivatives.