Abstract
AbstractAn asymmetric hydrogenation of 2,4‐diaryl‐3H‐benzo[b]azepines, catalyzed by dendritic phosphinooxazoline (PHOX) iridium complexes, has been developed. Only the imine group was reduced, while the C=C bond remained untouched, affording a range of chiral 2,3‐dihydro‐1H‐benzo[b]azepine derivatives with good to excellent enantioselectivity (up to 91 % ee). A slightly positive dendritic effect on catalytic reactivity (up to 10 000 TON) was observed.
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