reaction takes place under mild conditions, with inexpensive catalytic system and full atom economy. Mechanistic studies suggest the intermediacy of FeII-hydride active catalyst capable to react with the alkyne group prior to alkene insertion, and computational studies suggest the occurrence of barrierless σ-bond metathesis involving HBpin and Fe−C bonds along the catalytic cycle.
用
铁制环:我们报道了第一个Fe催化的
硼化环化反应,该反应提供一个C-C和一个C-B键,从而允许形成可进一步官能化的含
硼基单元的碳环和杂环。该反应在温和的条件下进行,具有廉价的催化体系和充分的原子经济性。机理研究表明,Fe II-
氢化物活性催化剂能够在烯烃插入之前与
炔烃基团发生中间反应,计算研究表明,沿催化循环发生涉及HBpin和Fe-C键的无障碍σ键易位。