OXIDATION OF α-HYDROXYKETONES WITH TRIPHENYLANTIMONY DIBROMIDE AND ITS CATALYTIC CYCLE
作者:Kin-ya Akiba、Hideyuki Ohnari、Katsuo Ohkata
DOI:10.1246/cl.1985.1577
日期:1985.10.5
α-Hydroxyketones were oxidized into α-diketones with triphenylantimony dibromide in the presence of two equiv. of base. Antimony-catalyzed debromination and oxidation cycle was devised for the system of ethyl 2,3-dibromo-3-phenylpropionate and α-hydroxyketones.
The first method for highlyenantioselective Brønsted acid catalyzed Heyns rearrangement reactions, featuring low catalyst loadings, high yields, high enantioselectivities, good functional-group tolerance, and broad substrate scope has been developed. The method is efficient, delivering various chiral amines, including some biologically active molecules.