Platinum(II), palladium(II) and rhodium(I) complexes of o-, m- and p-Ph2PC6H4PO(OEt)2. PtCl2–SnCl2 Hydroformylation catalysts modified with phosphonated triarylphosphines

Organic–inorganic hybrid materials based on organophosphorus coupling molecules: from metal phosphonates to surface modification of oxides

“…In the field of catalysis, phosphonated phosphines have been used to prepare hemilabile transition metal complexes [35] and water-soluble complexes [36][37][38]. For our needs we prepared two diethyl phosphonated phosphine ligands of formula Ph 2 P(CH 2 ) 3 PO 3 Et 2 (ligand L) and Ph 2 P(4-C 6 H 4 PO 3 Et 2 ) (ligand L') (Eq.…”

Synthesis and coordination properties of palladium(II) and platinum(II) complexes with phosphonated triphenylphosphine derivatives

“…Ambitions to use various ''field-proven'' homogeneous catalysts under aqueous and biphasic conditions made for the synthesis of a vast amount of phosphines modified by hydrophilic groups such as ammonium and phosphonium (cationic), sulfonate, phosphonate and carboxylate (anionic) or alcohol and polyether chain (neutral) [1]. Phosphines modified by phosphonate moiety [2] have been attracting attention as alternatives to well-established sulfonates [1]; several examples of their use in biphasic catalysis have been mentioned in literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] (e.g., Pd-catalysed electrochemical reduction of CO 2 [3], Rh-catalysed carbon-carbon double bond hydrogenation or hydroformylation [4,5], Pd-catalysed benzyl halide carbonylation [6] and Suzuki coupling [7]). A great advantage (compared with other hydrophilic moieties) is the possibility to bind the phosphonated ligand to an inert oxide surface (e.g., Al 2 O 3 ) [8], onto activated carbon surface [9] or into a layered framework, e.g., zirconium phosphonate [10,12] or zirconium phosphite/phosphonate hybrid material [13].…”

“…A great advantage (compared with other hydrophilic moieties) is the possibility to bind the phosphonated ligand to an inert oxide surface (e.g., Al 2 O 3 ) [8], onto activated carbon surface [9] or into a layered framework, e.g., zirconium phosphonate [10,12] or zirconium phosphite/phosphonate hybrid material [13]. Such supported catalysts have been successfully tested in Rhcatalysed alkene hydroformylation [12,14], Rh-catalysed methanol carbonylation [9,15], Ru-catalysed asymmetric b-keto ester hydrogenation [4,11] or Heck reaction [13]. Several tests were also performed in organic solvents under homogeneous conditions (e.g., Pt/Sn-catalysed alkene hydroformylation [11], Rh-catalysed methanol carbonylation [16] and Rh-catalysed styrene hydroformylation [17]).…”

“…Such supported catalysts have been successfully tested in Rhcatalysed alkene hydroformylation [12,14], Rh-catalysed methanol carbonylation [9,15], Ru-catalysed asymmetric b-keto ester hydrogenation [4,11] or Heck reaction [13]. Several tests were also performed in organic solvents under homogeneous conditions (e.g., Pt/Sn-catalysed alkene hydroformylation [11], Rh-catalysed methanol carbonylation [16] and Rh-catalysed styrene hydroformylation [17]). …”

(Diphosphane monosulfide)platinum(II) Complexes for Hydroformylation Reactions: Their Catalytic Activity and a High‐Pressure NMR Mechanistic Study

“…[38,39] Considerably less attention has been paid to the use of Pt complexes of heteroditopic ligands as catalysts for olefin hydroformylation. [7,40,41] Here we report our results using both neutral and cationic methylplatinum complexes of diphosphane monosulfide ligands in combination with SnCl 2 as catalysts for the hydroformylation of 1-octene. In particular, we have focused our interest on the roles of the heteroditopic ligand and the cocatalyst, and on the effects of chelating ring size in/on the catalytic reaction.…”