A study of the stereochemical control on the asymmetric dihydroxylation of the double bond of optically active vinyl epoxides and their derivatives (bromo derivatives, azido derivatives, and vinyl aziridines) was carried out and the obtained results are herein reported. The most interesting results were obtained on trans α,β-unsaturated epoxy esters, which were successfully converted with a diastereomeric ratio >80% into the corresponding diols using either the matched or the mismatched conditions, depending on the ligand used. Unprotected bromo derivatives and unprotected aziridines did not afford significant results, while for the protected bromo derivatives, azido derivatives, and N-Boc protected aziridines the matched conditions led to a diastereomeric ratio >95%.

Double stereodifferentiation in the asymmetric dihydroxylation of optically active olefins / Righi, Giuliana; Bovicelli, Paolo; Tirotta, Ilaria; Sappino, Carla; Mandic', Emanuela. - In: CHIRALITY. - ISSN 0899-0042. - 28:5(2016), pp. 387-93-393. [10.1002/chir.22587]

Double stereodifferentiation in the asymmetric dihydroxylation of optically active olefins

TIROTTA, ILARIA;SAPPINO, CARLA;MANDIC', EMANUELA
2016

Abstract

A study of the stereochemical control on the asymmetric dihydroxylation of the double bond of optically active vinyl epoxides and their derivatives (bromo derivatives, azido derivatives, and vinyl aziridines) was carried out and the obtained results are herein reported. The most interesting results were obtained on trans α,β-unsaturated epoxy esters, which were successfully converted with a diastereomeric ratio >80% into the corresponding diols using either the matched or the mismatched conditions, depending on the ligand used. Unprotected bromo derivatives and unprotected aziridines did not afford significant results, while for the protected bromo derivatives, azido derivatives, and N-Boc protected aziridines the matched conditions led to a diastereomeric ratio >95%.
2016
asymmetric dihydroxylation; double stereodifferentiation; vinyl epoxide; vinyl azido alcohol; vinyl aziridine
01 Pubblicazione su rivista::01a Articolo in rivista
Double stereodifferentiation in the asymmetric dihydroxylation of optically active olefins / Righi, Giuliana; Bovicelli, Paolo; Tirotta, Ilaria; Sappino, Carla; Mandic', Emanuela. - In: CHIRALITY. - ISSN 0899-0042. - 28:5(2016), pp. 387-93-393. [10.1002/chir.22587]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/933900
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