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- W3011570490 abstract "We report full details of the synthesis and characterization of monohydride-dichloro rhodium(III) complexes bearing chiral diphosphine ligands, such as (S)-BINAP, (S)-DM-SEGPHOS, and (S)-DTBM-SEGPHOS, producing cationic triply chloride bridged dinuclear rhodium(III) complexes (1 a: (S)-BINAP; 1 b: (S)-DM-SEGPHOS) and a neutral mononuclear monohydride-dichloro rhodium(III) complex (1 c: (S)-DTBM-SEGPHOS) in high yield and high purity. Their solid state structure and solution behavior were determined by crystallographic studies as well as full spectral data, including DOSY NMR spectroscopy. Among these three complexes, 1 c has a rigid pocket surrounded by two chloride atoms bound to the rhodium atom together with one tBu group of (S)-DTBM-SEGPHOS for fitting to simple olefins without any coordinating functional groups. Complex 1 c exhibited superior catalytic activity and enantioselectivity for asymmetric hydrogenation of exo-olefins and olefinic substrates. The catalytic activity of 1 c was compared with that of well-demonstrated dihydride species derived in situ from rhodium(I) precursors such as [Rh(cod)Cl]2 and [Rh(cod)2 ]+ [BF4 ]- upon mixing with (S)-DTBM-SEGPHOS under dihydrogen." @default.
- W3011570490 created "2020-03-23" @default.
- W3011570490 creator A5001107116 @default.
- W3011570490 creator A5011427199 @default.
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- W3011570490 creator A5039255382 @default.
- W3011570490 creator A5069384787 @default.
- W3011570490 creator A5072725999 @default.
- W3011570490 date "2020-06-25" @default.
- W3011570490 modified "2023-10-15" @default.
- W3011570490 title "Monohydride‐Dichloro Rhodium(III) Complexes with Chiral Diphosphine Ligands as Catalysts for Asymmetric Hydrogenation of Olefinic Substrates" @default.
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