Journal of Organic Chemistry p. 10151 - 10162 (2015)
Update date:2022-08-17
Topics:
McCartney, Dennis
Nottingham, Chris
Müller-Bunz, Helge
Guiry, Patrick J.
The synthesis of a range of novel gem-disubstituted and electronically varied thiophene-oxazoline (HetPHOX) ligands and ferrocene-oxazoline (FcPHOX) ligands and their application in the Pd-catalyzed intermolecular asymmetric Heck reaction (IAH) is described. These investigations show that gem-disubstitution of i-Pr-PHOX-type ligands can lead to effective and cost-efficient alternatives to the corresponding t-Bu-PHOX systems. The Pd complexes of these ligands were very effective in the IAH, providing phenylated products in up to 100% conversion with up to 97% ee.
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