Abstract
A series of novel chiral thioether-phosphite ligands derived from 1,2-O-isopropylidenexylofuranose have been synthesized. Reaction of these chiral ligands with [M(cod)2]BF4 (M = Ir, Rh; cod = 1,5-cyclooctadiene) yielded the complexes [M(cod)(P−S)]BF4 10−15. The addition of H2 to iridium complexes 12−15 gave the cis-dihydridoiridium(III) complexes [IrH2(cod)(P−S)]BF4 19−21, which are present in only one diastereoisomeric form. Iridium complexes are active in the hydrogenation of itaconic acid and produce enantioselectivities of up to 51% under atmospheric pressure. They have also been tested in the Rh-catalyzed hydroformylation of styrene. We discuss hydroformylation results according to the solution structure of the species formed under hydroformylation conditions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.