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Asymmetric desymmetrization of organophosphorus compounds with organolithium-sparteine chiral bases

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Woźnicki P.
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
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2019
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vol. 74
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issue 1
EN
Chiral organophosphorus compounds are one of the main groups of ligands used in asymmetric homogenous catalysis. Ongoing progress in transition metal-catalyzed reactions requires that efficient methods for the synthesis of chiral phosphines and their derivatives are available. This review is focused on desymmetrization of heteroleptic tertiary phosphine derivatives via stereoselective lithiation using organolithium/sparteine complexes as chiral bases combined with oxidative homocoupling or trapping the P-chiral intermediates with electrophiles. The method has been used to obtain both known and new chiral ligands with application in stereoselective reactions catalyzed by transition metal complexes.
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