Regioselectivity in the reduction of cyclic enediones with NaBH4/CeCl3
作者:Chunjian Liu、D.Jean Burnell
DOI:10.1016/s0040-4039(97)01498-6
日期:1997.9
Reductions of cyclic enediones by sodiumborohydride proceed with markedly different regiochemical preferences with and without cerium(III) chloride. In the presence of CeCl3, reductions appear to be controlled by two phenomena: the accessibility toward axial addition, in common with reactions without CeCl3, and accessibility for complexation by the Lewis acid.