Scheme 1. Previous work: imine hydroboration catalyzed by nontrigonal phosphorus triamide 1. Guiding hypothesis: diversion of reactivity via relay oxidation can be accomplished by Atherton–Todd crossover of P–H in 2 for P–Cl in 3. Present work: direct heteroarene C–H borylation with HBpin catalyzed by 1 in presence of chloroalkane electrophile.
