Secondary Phosphine Oxide–Gold(I) Complexes and Their First Application in Catalysis

Abstract

A series of new secondary phosphine oxide (SPO)–gold(I) complexes have been synthesized and characterized by X-ray crystallography. Complexes exhibited dimeric structures interconnected by O–H···Cl hydrogen bonds. Their first use in homogeneous catalysis is reported and suggests a broad field of application in prototypical enyne cycloisomerization and hydroxy- and methoxycyclization reactions.

A HELIXOL‐Derived Bisphosphinite Ligand: Synthesis and Application in Gold‐Catalyzed Enynes Cycloisomerization

“…Synthetic procedures: Triyne 2 was synthesized through the procedure described in the littérature,[3b] as well as enynes 8a , 8b , 8c , 8d , 8e …”

Coordination chemistry and catalysis with secondary phosphine oxides

“…Preparation of gold(I) nanoparticles described by van Leeuwen and coworkers. 189,190 At the same time Schröder and co-workers 191 described the first use of molecular systems in enyne cycloisomerisation and hydroxy-and methoxycyclisation reactions (Scheme 80).…”

A Zwitterionic Gold(I) Diphenylphosphane Oxide Complex Stabilized by a Hard Pulling Lewis Acid and a Soft Pushing Lewis Base

“…The subsequent reaction with Me 3 SiCl afforded the related silyl ether [Ph 2 P(OSiMe 3 )AuCl] . Recently, 3 and related compounds have been utilized as catalysts for enyne cycloisomerization and hydroxy‐ and methoxycyclization reactions . Reduction of 3 and related compounds provided phosphane‐supported Au nanoparticles, which catalyze the hydrogenation of aldehydes .…”