Chemistry of λ3-2H-azaphosphirene metal complexes

Strong Evidence for a Transient Phosphinidenoid Complex

“…To investigate alternative routes to 2H-azaphosphirene complexes, [16] we reacted complex 2 with dimethylcyanamide, which gave 2H-azaphosphirene complex 6 selectively [17] if diluted solutions of 2 were used. At higher concentrations, a mixture of 6 and N-iminophosphane complex 7 a was obtained (ratio 1:1; Scheme 3).…”

Chemischer Nachweis eines transienten Phosphinidenoid‐ Komplexes

“…In der Hoffnung, eine Alternativsynthese von 2H-Azaphosphiren-Komplexen [16] zu finden, wurde 2 mit Dimethylcyanamid zur Reaktion gebracht, was im Falle verdünnter Lösungen selektiv zur Bildung des 2H-Azaphosphiren-Komplexes 6 führte. [17] Bei höherer Konzentration wurde ein Gemisch aus 6 und dem (N-Imido)phosphan-Komplex 7 a erhalten (Verhältnis 1:1; Schema 3).…”

Synthesis and Reactivity of an Unusual Ferrocenophane Bis(carbene complex)

“…[2] Fischer carbene complexes have also found use in phosphorus heterocyclic chemistry, i.e., in the synthesis of 2H-azaphosphirene complexes, [5] which themselves are versatile precursors for a large number of acyclic, cyclic and polycyclic compounds. [5] More recently, we developed new synthetic methodologies based on 2H-azaphosphirene complexes that provide facile access to four- [6] and five-membered [7,8] heterocycles under mild oxidative [7] or protic [8] conditions, thus introducing the "clickchemistry" concept to the field of phosphorus heterocyclic chemistry.…”

“…[5] More recently, we developed new synthetic methodologies based on 2H-azaphosphirene complexes that provide facile access to four- [6] and five-membered [7,8] heterocycles under mild oxidative [7] or protic [8] conditions, thus introducing the "clickchemistry" concept to the field of phosphorus heterocyclic chemistry. We demonstrated that this new synthetic concept can be easily extended to oxaphosphirane [9] and azaphosphiridine [10] complex chemistry.…”