alpha-Ketophosphonates as ester surrogates : isothiourea-catalyzed asymmetric diester and lactone synthesis
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Isothiourea HBTM-2.1 catalyzes the asymmetric Michael addition/lactonization of aryl- and alkenylacetic acids using α-keto-β,γ-unsaturated phosphonates as α,β-unsaturated ester surrogates, giving access to a diverse range of stereodefined lactones or enantioenriched functionalized diesters upon ring-opening.
Smith , S R , Leckie , S M , Holmes , R , Douglas , J , Fallan , C , Shapland , P , Pryde , D , Slawin , A M Z & Smith , A D 2014 , ' alpha-Ketophosphonates as ester surrogates : isothiourea-catalyzed asymmetric diester and lactone synthesis ' Organic Letters , vol 16 , no. 9 , pp. 2506-2509 . DOI: 10.1021/ol500873s
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Organic Letters, copyright © 2014 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/ol500873s
This work is in part supported by the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013) ERC Grant Agreement No. 279850
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