Interaction of dicoordinate phosphorus with boranes: chemistry of 3a,6a-diaza-1,4-diphosphapentalene as masked phosphinidene

Abstract

Treatment of 3a,6a-diaza-1,4-diphosphapentalene (DDP) with an excess of PhBCl2 yields the corresponding bis(borane) adduct DDP(PhBCl2)2 (14), demonstrating the availability of two lone pairs on the phosphorus center. The reaction between...

Reductive Elimination at Pb(II) Center of an (Amino)plumbylene‐Substituted Phosphaketene: New Pathway for Phosphinidene Synthesis

“…This phosphaketene 3 evolves under mild conditions, by reductive elimination at the Pb II center forming new N−P and P−P bond, to generates the transient amino‐ and phosphanylidene‐phosphaketenes 6 and 7 . Of particular interest, the (amino)phosphaketene 6 evolves further to a new heterocyclic (amino)phosphanylidene phosphorane 4 , which shows a unique phosphinidenoid reactivity [30] . This new alternative route for the generation of phosphaketenes, compared to the classical route, should extend and facilitate further their access.…”

A New Class of Two‐Deck Dicationic Heteropentalenes Existing by the Balance between Interdeck Aromaticity and Covalent P−P Bonding

“…The first type includes reactions of the heterocyclic system (formation of π‐complexes with organic π‐acceptors, [18] cycloaddition reactions, [21] rearrangement of DDP framework [22] ). The second type are reactions of stabilized singlet phosphinidene (oligomerization, [20] complexation with metal salts and Lewis acids, [23,24] oxidative addition reactions, [25–28] formation of adducts with carbenes [29,30] …”