Premium
Rh(I) complexes with new C 2 ‐symmetric chiral diphosphoramidite ligands: Catalytic activity for asymmetric hydrogenation of olefins
Author(s) -
Drommi Dario,
Arena Carmela Grazia
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3837
Subject(s) - chemistry , rhodium , asymmetric hydrogenation , cationic polymerization , catalysis , biphenyl , enantioselective synthesis , chelation , diamine , hydrogen , stereochemistry , medicinal chemistry , organic chemistry , combinatorial chemistry
The design and synthesis of three new C 2 ‐symmetric chiral diphosphoramidite ligands starting from simple and cheap building blocks have been developed. Rhodium(I) cationic complexes bearing these chelate ligands have been prepared and applied in asymmetric hydrogenation of model olefins. A rhodium complex with a diphosphoramidite containing a chiral diamine configurationally stable and two fluxional chiral biphenyl units gave higher enantioselectivity with increasing hydrogen pressure (87% ee) in the hydrogenation of dimethyl itaconate.