HFO-1234ze. No catalyst, additives or transition metals are required, rather the methodology relies on a recently developed boron reagent. Remarkably, the boron site of this reagent plays a dual role in the reaction sequence, being nucleophilic at boron in the C-F cleavage step (SN 2') but electrophilic at boron en route to the carbon-carbon bond-forming step (SE 2'). The duplicitous behaviour is underpinned
报道了一种简单的一锅法,用于三
氟甲基烯烃衍
生物与醛和酮的选择性脱氟烷基化。该反应序列允许在存在sp2 CF键的情况下从
CF3基团的单个sp3 CF键以高度选择性的方式构建新的CC键。范围包括与工业相关的碳
氟化合物,包括HFO-1234yf和
HFO-1234ze。不需要催化剂,添加剂或过渡
金属,而是该方法依赖于最近开发的硼试剂。值得注意的是,该试剂的
硼位点在反应序列中起着双重作用,在CF裂解步骤(SN 2')处的
硼亲核,而在碳-碳键形成步骤(
SE 2' )。