Hydroamination reactions catalyzed by [Au2(μ-Cl)(μ-bis(phosphino)ferrocene)][BArF24]

Beyond phosphorus: synthesis, reactivity, coordination behaviour and catalytic properties of 1,1′-bis(diphenylstibino)ferrocene

“…No such interaction has been observed in any of the polymorphs and solvatomorphs of [(μ( P , P ′)-dppf)(AuCl) 2 ] 51,57 that have been structurally characterised thus far, 26 which only form intermolecular aurophilic interactions (if any at all). 58 Intermolecular interactions operate even in the crystals of 19 ·2CHCl 3 , albeit at a relatively longer distance, linking the individual complex molecules into infinite chains along the crystallographic 2 1 axes (Au1⋯Au2′ = 3.2407(4) Å, Au1–Au2⋯Au1′ ≈ 162°; see ESI†). Conversely, the Au–Sb and Au–Cl distances determined for 19 ·2CHCl 3 are unexceptional considering the data reported for [(Ph 3 Sb)AuCl].…”

Synthesis of disubstituted furans catalysed by [(AuCl)2(μ-bis(phosphino)metallocene)] and Na[BArF24]

“…Similarly, the catalytic activity of [(AuCl) 2 (μ-PP)] compounds in the hydroamination of phenylacetylene with various aryl amines was significantly enhanced by the addition of Na[BArF 24 ]. 49 …”

“…39 The synthesis of various gold(I) [(AuCl) 2 (μ-PP)] (PP = 1,1′-bis( phos-phino)metallocene) compounds have been reported [39][40][41][42][43][44][45][46][47][48] and their catalytic properties have been evaluated for several organic reactions, including hydroamination and a variety of ring closing reactions. [48][49][50][51] More recently, gold catalysts have been studied in conjunction with halide abstracting agents such as AgSbF 6 , AgNTf 2 , and AgOTf. [52][53][54] In 2020, Tsurusaki examined the effectiveness of these additives in the presence of a variety of diphosphine-gold(I) complexes in an intramolecular alkyne hydroarylation of a phenol-derivative.…”

“…This study highlighted the enhanced catalytic activity [(AuCl) 2 (μ-PP)] compounds in the presence of Na[BArF 24 ]. Similarly, the catalytic activity of [(AuCl) 2 (μ-PP)] compounds in the hydroamination of phenylacetylene with various aryl amines was significantly enhanced by the addition of Na[BArF 24 ] 49. …”