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Double Stereodifferentiation in the Asymmetric Dihydroxylation of Optically Active Olefins
Author(s) -
Righi Giuliana,
Bovicelli Paolo,
Tirotta Ilaria,
Sappino Carla,
Mandic’ Emanuela
Publication year - 2016
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.22587
Subject(s) - dihydroxylation , chemistry , diastereomer , optically active , chirality (physics) , double bond , ligand (biochemistry) , stereochemistry , chiral auxiliary , enantioselective synthesis , organic chemistry , catalysis , biochemistry , nambu–jona lasinio model , chiral symmetry breaking , physics , receptor , quantum mechanics , quark
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%. Chirality 28:387–393, 2016 . © 2016 Wiley Periodicals, Inc.