Abstract
The influence of anionic and cationic co-surfactants in nonionic microemulsions on the performance of chiral Rh-norbornadiene complexes with different counterions in the 1,2-addition of phenylboronic acids to N-tosylimines is described. Catalytic studies revealed the unique role of the counterion and the type of co-surfactant. NMR experiments and the calculated intrinsic binding orbitals suggest that the anion exchange with co-surfactant accelerates the formation of the catalytically active Rh-OH complex, thus increasing the yield and affecting the enantioselectivity. For more information, see the Full Paper by M. Kirchhof, K. Abitaev and co-workers on page 16853 ff.
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