Bis(perfluoroalkyl) Phosphino-Oxazoline: A Modular, Stable, Strongly π‑Accepting Ligand for Asymmetric Catalysis
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A new class of stable, strongly π-accepting and modular bis(perfluoroalkyl)-phosphine-oxazoline ligands (FOX) as CO mimics was prepared. It was demonstrated that these ligands, when coordinated to palladium catalysts, promote the asymmetric alkylation of monosubstituted allyl substrates with excellent regio- and enantioselectivity. Solid and solution structure analysis of the FOX-ligated Pd-allyl intermediate reveals that the combination of relative steric and strong trans influences presented by the P(CF3)2 moiety gave rise to the excellent selectivity.
创建时间：
2012-09-21
