Application of phosphorus-bridged rigid, bent bis(NHCs) as dipodal ligands in main group and transition metal chemistry

Abstract

The first doubly P-bridged rigid, bent bis(NHCs) were generated and shown to be good building blocks in main group adducts and metal complexes with selective thermal retro-[4 + 2] cycloaddition chemistry.

Elimination reactions in 1,4-diphosphinine chemistry: mixed-valence intermediates and 1,1- vs. 1,4-elimination pathways

“…Several different reactivity studies on 1,4-diphosphinines IX have been performed, such as [4 + 2]-cycloaddition 21–23 and 1,4-addition reactions, 16,22 the latter yielding σ 3 λ 3 -1,4-dihydro-1,4-diphosphinine structural motifs. In the same vein, a σ 4 λ 5 -1,4-dihydro-1,4-diphosphinine could be achieved by oxidation with H 2 O 2 in the presence of BaCl 2 .…”