Defluorosilylation of Industrially Relevant Fluoroolefins Using Nucleophilic Silicon Reagents
作者:Greg Coates、Hui Yee Tan、Carolin Kalff、Andrew J. P. White、Mark R. Crimmin
DOI:10.1002/anie.201906825
日期:2019.9.2
A number of new magnesium and lithium silyl reagents were prepared and shown to be outstanding nucleophiles in reactions with industrially relevant fluoroolefins. These reactions result in a net transformation of either sp2 or sp3 C-F bonds into C-Si bonds by two modes of nucleophilic attack (SN V or SN 2'). The methods are mild, proceeding with high chemo- and regioselectivity. Mechanistic pathways
制备了许多新的镁和硅烷基锂试剂,它们在与工业相关的氟烯烃反应中显示出优异的亲核性。这些反应导致通过亲核攻击的两种模式(SN V或SN 2')将sp2或sp3 CF键净转化为C-Si键。该方法温和,化学和区域选择性高。描述了导致从HFO-1234yf,HFO-1234ze和HFO-1336mzz产生新取代模式的机制途径,这些途径以前是过渡金属催化的二氟甲硅烷基化途径无法达到的。