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Mild and Highly Chemoselective Oxidation of Thioethers Mediated by Sc(OTf)3.

✍ Scribed by Mizio Matteucci; Gurdip Bhalay; Mark Bradley

Book ID: 101946203
Publisher: John Wiley and Sons
Year: 2003
Weight: 19 KB
Volume: 34
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200324077

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## Abstract The __N__,__N′__‐dioxide–Sc(OTf)~3~ complex was applied in the asymmetric Michael reaction of 1__H__‐benzotriazole with chalcones to give the corresponding N‐1 products in excellent yields (up to 99 %) with excellent enantioselectivities (up to 99 % __ee__). Further transformation into