Asymmetric Radical Addition of TEMPO to Titanium Enolates
作者:Phillip J. Mabe、Armen Zakarian
DOI:10.1021/ol403398u
日期:2014.1.17
A mild method for α-hydroxylation of N-acyl oxazolidinones by asymmetricradicaladdition of the 2,2,6,6-tetramethylpiperidine N-oxy (TEMPO) radical to titanium enolates was developed. The high diastereoselectivity and broad scope of the reaction show synthetic utility for the α-hydroxylation of substrates that are not tolerant to strongly basic conditions.