Me<sub>2</sub>(CH<sub>2</sub>Cl)SiCF<sub>3</sub> Facilitated Tandem Synthesis of Oxasilacycles Featuring a Trifluoromethyl Group
作者:Chuan-Wen Lei、Xi-Yu Wang、Bo-Shuai Mu、Jin-Sheng Yu、Ying Zhou、Jian Zhou
DOI:10.1021/acs.orglett.2c03393
日期:2022.11.18
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。