Synthesis of α-CF<sub>3</sub>-Substituted Carbonyl Compounds with Relative and Absolute Stereocontrol Using Electrophilic CF<sub>3</sub>-Transfer Reagents
作者:Václav Matoušek、Antonio Togni、Vincent Bizet、Dominique Cahard
DOI:10.1021/ol2023328
日期:2011.11.4
Evans-type chiral lithium imide enolates undergo diastereoselective α-trifluoromethylation with a hypervalent iodine–CF3 reagent with up to 91% combined isolated yield and 97:3 dr. The resulting isolated diastereopure products can be further transformed into valuable products without racemization.
伊万斯型手性酰亚胺锂烯醇化物通过高价碘– CF 3试剂进行非对映选择性α-三氟甲基化,合并分离产率高达91%,dr:97:3。得到的分离的非对映纯产物可以进一步转化为有价值的产物,而无需消旋。