bond at either the meta or para position by only changing the catalyst system poses a significant challenge. We herein report the [Fe(TPP)Cl]-enabled, selective, C-H difluoromethylation of arenes using BrCF2CO2Et as the difluoromethylation source, which successfully altered the selectivity from the meta to the para position. A preliminary mechanistic study revealed the iron porphyrin complex not only
仅通过改变催化剂体系在间位或对位直接官能化 CH 键是一项重大挑战。我们在此报告了使用 Br
CF2CO2Et 作为二
氟甲基化源的 [Fe(
TPP)Cl] 启用的、选择性的、CH 二
氟甲基化
芳烃,这成功地改变了从间位到对位的选择性。初步的机理研究表明,
铁卟啉配合物不仅激活了芳环,而且由于
配体空间的影响,还诱导了对位选择性。