CuBr-Catalyzed Reaction of<i>N</i>,<i>N</i>-Dimethylanilines and Silyl Enol Ethers: An Alternative Route to β-Arylamino Ketones
作者:Lehao Huang、Xunbin Zhang、Yuhong Zhang
DOI:10.1021/ol901347t
日期:2009.8.20
A wide range of silylenolethers undergo the reactions with N,N-dimethylanilines in the presence of transition metal catalysts under mild conditions to give β-arylamino ketones. In the cases of silylenolethers derived from unsymmetrical ketones, regiospecific addition of carbonyl compounds was obtained at the olefinic position of silylenolether.
We demonstrated that a cobalt(II)-TBHP ( tert -butyl hydroperoxide) oxidizing system efficiently catalyzes the coupling of aromatic tertiary amines with enol silyl ethers, producing the corresponding β-aminoketones.