作者:Adriana Lorente、Miquel Pellicena、Pedro Romea、Fèlix Urpí
DOI:10.1016/j.tet.2014.12.099
日期:2015.2
TiCl4-mediated aldol reactions of chiral methyl α-silyloxy ketones with a variety of aldehydes provide the corresponding 1,4-syn aldol adducts with moderate to high stereocontrol. This transformation represents a new approach to substrate-controlled acetate aldol reactions and complements the 1,4-anti asymmetric induction produced by the related α-benzyloxy ketones. This new approach could be useful
TiCl 4介导的手性甲基α-甲硅烷氧基酮与多种醛的醛醇缩合反应可提供相应的1,4-顺式醛醇加合物,具有中等至高度的立体控制。该转化代表了底物控制的乙酸羟醛反应的新方法,并且补充了由相关的α-苄氧基酮产生的1,4-抗不对称诱导。这种新方法可能对设计更有效的天然产物合成有用。