Asymmetric Synthesis of Tertiary α-Hydroxy Phosphonic Acid Derivatives under Aerobic Oxidation Conditions
作者:Biplab Maji、Hisashi Yamamoto
DOI:10.1055/s-0034-1380290
日期:——
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).
报道了铜催化的 β-酮膦酸酯的不对称 α-羟基化,使用原位生成的亚硝基羰基化合物作为氧的亲电源。该反应结合了好氧氧化和路易斯酸催化。以高产率(高达 97% 的产率)和高对映选择性(高达 >99% ee)合成了 α-氨基氧基-β-酮膦酸酯。