Zinc(ii)-mediated diastereoselective Passerini reactions of biocatalytically desymmetrised renewable inputs
Literature Information
Lisa Moni, Luca Banfi, Daniele Cartagenova, Chiara Lambruschini, Elisa Martino, Romano V. A. Orru, Eelco Ruijter, Jordy M. Saya, Renata Riva
2,5-Bis(hydroxymethyl)tetrahydrofuran, a renewable building block, has been efficiently desymmetrised to give either enantiomers of the corresponding monobutyrate in high ee exploiting a biocatalytic methodology. The aldehydes derived from these monoesters have been subjected to a series of diastereoselective Passerini reactions. Careful optimization of reaction conditions has allowed for the increase of the dr from 1.5 : 1 to 9 : 1. The best results were obtained with zinc(II)-mediated reactions. In particular, a new modification of Passerini reaction that employs zinc dicarboxylates has been introduced.
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Organic Chemistry Frontiers

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