Tetrahedron

A Synthetic Route to a New Surface-Active Phosphine Ligand: 12-DPDP (12-Diphenylphosphinododecylphosphonate)

TL Schull, LR Olano, DA Knight

Index: Schull, Terence L; Renee Olano; Andrew Knight Tetrahedron, 2000 , vol. 56, # 37 p. 7093 - 7097

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Citation Number: 23

Abstract

A water-soluble phosphonate-functionalized phosphine ligand Na2 [Ph2P (CH2) 12PO3](8), was prepared in eight steps from cyclododecanone. Phosphine 8 reacts with [Rh (COD) Cl] 2 in methanol to give the new complex Na2 [Rh (COD)(Ph2P (CH2) 12PO3) Cl](9). Complex 9 is inactive in the catalytic hydrogenation of 1-hexene and cyclohexene due to the decomposition of 9 to rhodium metal in the presence of hydrogen gas. Hydrogenation of ...