期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 44, 页码 23602-23607出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202110286
关键词
3-amino dihydrocoumarins; asymmetric hydrogenation; chirality; cyclic amino acid derivatives; rhodium
资金
- National Natural Science Foundation of China [21971162, 21831005, 21620102003]
- Shanghai Municipal Education Commission [201701070002E00030]
An asymmetric hydrogenation of 3-benzoylaminocoumarins was achieved for the first time using the BridgePhos-Rh catalytic system, providing chiral 3-amino dihydrocoumarins in high yields and with excellent enantioselectivities. The relationship between the enantioselectivities of the hydrogenations and the dihedral angles and the resulting pi-pi stacking effects of the BridgePhos-Rh complexes, determined by X-ray diffraction analysis, was discussed. The corresponding hydrogenated products allow for many transformations, providing several chiral skeletons with important physiological and pharmacological activities.
An asymmetric hydrogenation of 3-benzoylaminocoumarins was achieved for the first time using our BridgePhos-Rh catalytic system, providing chiral 3-amino dihydrocoumarins in high yields (up to 98 %) and with excellent enantioselectivities (up to 99.7 % ee). The relationship between the enantioselectivities of the hydrogenations and the dihedral angles and the resulting pi-pi stacking effects of the BridgePhos-Rh complexes, which were determined by X-ray diffraction analysis, are discussed. The corresponding hydrogenated products allow for many transformations, providing several chiral skeletons with important physiological and pharmacological activities.
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