Direct α-Siladifluoromethylation of Lithium Enolates with Ruppert-Prakash Reagent via CF Bond Activation
作者:Ryota Hashimoto、Toshiaki Iida、Kohsuke Aikawa、Shigekazu Ito、Koichi Mikami
DOI:10.1002/chem.201304473
日期:2014.3.3
The direct α‐siladifluoromethylation of lithium enolates with the Ruppert–Prakash reagent (CF3TMS) is shown to construct the tertiary and quaternary carbon centers. The Ruppert–Prakash reagent, which is versatile for various trifluoromethylation as a trifluoromethyl anion (CF3−) equivalent, can be employed as a siladifluoromethyl cation (TMSCF2+) equivalent by CF bond activation due to the strong
用Ruppert-Prakash试剂(CF 3 TMS)将烯醇锂直接进行α-硅二氟甲基化反应可显示出第三级和第四级碳中心。所述Ruppert的-普拉卡什试剂,其是通用的各种三氟甲基化作为三氟甲基阴离子(CF 3 - )等价的,可以用作一个siladifluoromethyl阳离子(TMSCF 2 +)被C等效 F键激活由于锂和之间的强相互作用氟原子。