New insights into the mechanism of asymmetric hydrogenation catalysed by monophosphonite-rhodium complexes.
The solvento complex [Rh(L)2(S)2]+ where L=tBuP(R-binaphthoxo) is shown to be in equilibrium with an eta-arene dirhodium complex and only weak, monodentate binding of alkenes is observed; in addition, an intermediate Rh alkyl hydride complex containing two coordinated monophosphonites is unambiguously characterised by NMR.
Gridnev
Ilya D
ID
Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan. igridnev@mail.tains.tohoku.ac.jp
Fan
Cheng
C
Pringle
Paul G
PG