Synthesis and application of complexes of a novel chiral diphenylphosphino-functionalized N-heterocyclic carbene

Complexes of the ligand (S,S)-1-(2-diphenylphosphanyl-naphtalen-1-yl)-3-(2-isopropyl-phenyl)-4,5-diphenyl-imidazolin-2-ylidene, a representative of a new class of chiral ligands, were obtained via a short route starting from (S,S)-1,2-diphenyl-ethylen-1,2-diamine; a Rh-complex was found to promote c...

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Bibliographic Details
Published inSynlett no. 10; pp. 1789 - 1793
Main Authors Bappert, E, Helmchen, G
Format Journal Article
LanguageEnglish
Published STUTTGART Thieme Medical Publishers 09.08.2004
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
chiral N-heterocyclic carbenes
TRANSITION-METAL-COMPLEXES
enantioselective hydrogenation
CRYSTAL-STRUCTURE
HYDROSILYLATION
chiral P ligands
OLEFIN METATHESIS
asymmetric catalysis
FACILE SYNTHESIS
IRIDIUM COMPLEXES
RH
rhodium
CONJUGATE ADDITION
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Summary:Complexes of the ligand (S,S)-1-(2-diphenylphosphanyl-naphtalen-1-yl)-3-(2-isopropyl-phenyl)-4,5-diphenyl-imidazolin-2-ylidene, a representative of a new class of chiral ligands, were obtained via a short route starting from (S,S)-1,2-diphenyl-ethylen-1,2-diamine; a Rh-complex was found to promote catalytic hydrogenation of a,p unsaturated esters with up to 99% ee.
ISSN:0936-5214
1437-2096
DOI:10.1055/s-2004-829548