Taddol and Binol-derived chiral phosphonites in asymmetric catalysis
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Published:25 Jul 2017
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Special Collection: 2017 ebook collection
G. W. Bowling, J. T. Fleming, A. Ficks, and L. J. Higham, in Organometallic Chemistry: Volume 41, ed. I. Fairlamb, J. M. Lynam, N. J. Patmore, and P. Elliott, The Royal Society of Chemistry, 2017, vol. 41, pp. 93-109.
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This article reviews recent findings from both the Higham research group and elsewhere pertaining to the synthesis and catalytic properties of chiral phosphonite ligands. Specifically, it will examine two types of popular contemporary phosphonites, derived from two main classes of precursor: the first being (R,R)-α,α,α′,α′-tetraaryl-2,2-dimethyl-1,3-dioxolane-4,5-dimethanol ((R,R)-Taddol), and the second being (R)-1,1′-bi-2-naphthol ((R)-Binol). Chiral phosphonites are well established as ligands which possess good π-acceptor properties and are effective at a number of asymmetric transformations – a selection of which will be discussed herein.