Abstract
The copper-catalyzed asymmetric α-hydroxylation of β-ketophosphonates, using in situ generated nitrosocarbonyl compounds as electrophilic source of oxygen, is reported. The reaction merges aerobic oxidation and Lewis acid catalysis. α-Aminoxy-β-ketophosphonates were synthesized in high yields (up to 97% yield) and high enantioselectivities (up to >99% ee).
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