Diphosphino-Functionalized 1,8-Naphthyridines: a Multifaceted Ligand Platform for Boranes and Diboranes.

ABSTRACT: A 1,8-naphthyridine diphosphine (NDP) reacts with boron-containing Lewis acids to generate complexes featuring a number of different naphthyridine bonding modes. When exposed to diborane B₂ Br₄ , NDP underwent self-deprotonation to afford [NDP-B₂ Br₃ ]Br, an unsymmetrical diborane comprised of four fused rings. The reaction of two equivalents of monoborane BBr₃ and NDP in a non-polar solvent provided the simple phosphine-borane adduct [NDP(BBr₃ )₂ ], which then underwent intramolecular halide abstraction to furnish the salt [NDP-BBr₂ ][BBr₄ ], featuring a different coordination mode from that of [NDP-B₂ Br₃ ]Br. Direct deprotonation of NDP by KHMDS or PhCH₂ K

SUBMITTER: Cui J 

PROVIDER: S-EPMC9292315 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature