Facile C–H, C–F, C–Cl, and C–C Activation by Oxatitanacyclobutene Complexes

Aryl ketones react readily with oxatitanacyclobutenes bearing pentamethylcyclopentadienyl ligands to form unique titanocene complexes resulting from Cp* modification and C–H activation. An intermediate in this reaction is intercepted with various functional groups to form carbonyl insertion, C–F activation, and cyclopropane ring-opening products.芳基酮可与携带五甲基环戊二烯基（pentamethylcyclopentadienyl，缩写Cp*）配体的氧杂钛环丁烯类化合物顺利反应，经由Cp*修饰与C-H活化过程生成独特的钛茂金属配合物。该反应的中间体可被各类官能团捕获，进而得到羰基插入、C-F活化以及环丙烷开环产物。