Reference of 224311-51-7. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 224311-51-7, Name is 2-(Di-tert-Butylphosphino)biphenyl
Intramolecular C-F bond cleavage provides a convenient, high yield route to metal complexes of hybrid cyclopentadienyl-phosphine ligands. On treatment with proton sponge the complexes [Cp*RhCl{(C6F5)2PCH2CH 2P(C6F5)2}]BF4 and [Cp*RhCl{(C6F5)2PC6H 4SMe-2}]BF4 undergo dehydrofluorinative C-C coupling to give the complexes [{eta5,eta1,eta1-C5Me 3[CH2C6F4P(C6F 5)CH2]2-1,3}RhCl]BF4 and [{eta5,eta1,eta1-C5Me 4CH2C6F4P(C6F 5)C6H4SMe-2}RhCl]BF4 rapidly and in quantitative yield. The reaction between [Cp*RhCl{PPh2(C6F5)}-(CNR)]BF4 (R = phenyl or cyclohexyl) and proton sponge produces [(eta5eta1-C5Me4CH2C 6F4PPh2)RhCl(CNR)]BF4, but is far slower and much less clean than for the complexes of the chelating ligands. The neutral complex [Cp*RhCl2{PPh2(C6F5)}] undergoes no reaction with proton sponge. The proposed mechanism involves initial formation of an eta4-fulvene complex, and subsequent nucleophilic attack (SNAr) at an ortho-C-F bond.
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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate