New Chiral Diphosphine Ligands Designed to have a Narrow Dihedral Angle in the Biaryl Backbone

Autor:	Hidenori Kumobayashi, Noboru Sayo, Takashi Miura, Takashi Moroi, Takao Saito, Tohru Yokozawa, Takero Ishizaki
Rok vydání:	2001
Předmět:	chemistry.chemical_compound Crystallography SEGPHOS Chemistry Stereochemistry Enantioselective synthesis Homogeneous catalysis General Chemistry Optically active Dihedral angle Catalytic hydrogenation Catalysis
Zdroj:	Advanced Synthesis & Catalysis. 343:264-267
ISSN:	1615-4169 1615-4150
DOI:	10.1002/1615-4169(20010330)343:3<264::aid-adsc264>3.0.co;2-t
Popis:	A series of novel optically active diphosphine ligands, (4,4′-bi-1,3-benzodioxole)-5,5′-diylbis(diarylphosphine)s (6), which are called SEGPHOS, has been designed and synthesized with dihedral angles in the Ru complexes being less than that in the corresponding BINAP-Ru complex. The stereorecognition abilities of SEGPHOS-Ru complex catalysts in the asymmetric catalytic hydrogenation of a wide variety of carbonyl compounds are superior to those observed with BINAP-Ru complex catalysts.
Databáze:	OpenAIRE
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