An unprecedented tandem trifluoromethylsilylation/intramolecular SN2 substitution sequence was realized by using bifunctional reagent Me2(CH2Cl)SiCF3, allowing efficient construction of valuable trifluoromethylated oxasilacyclohexanes that are difficult to access by known methods. Initial attempts into developing asymmetric variant reveal that using cinchonine-derived dimeric PTC catalyst could afford
通过使用双功能试剂 Me 2 (CH 2 Cl)SiCF 3实现了前所未有的串联三
氟甲基
硅烷化/分子内 S N 2 取代序列,从而可以高效构建已知方法难以获得的有价值的三
氟甲基化
硅氧烷环己烷。开发不对称变体的初步尝试表明,使用
辛可宁衍生的二聚
PTC 催化剂可以提供高达 92% 对映体过量的手性
硅氧烷环己烷。