Journal
ASIAN JOURNAL OF ORGANIC CHEMISTRY
Volume 6, Issue 9, Pages 1219-1221Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ajoc.201700094
Keywords
asymmetric catalysis; benzo[b]azepine; dendrimers; hydrogenation; N,P ligands
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Funding
- National Natural Science Foundation of China [21232008, 21521002]
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An 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 10000TON) was observed.
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