Salen-based hypercrosslinked polymer-supported Pd as an efficient and recyclable catalyst for C–H halogenation†
In this work, we report the first use of a salen-based hypercrosslinked polymer-supported Pd catalyst to carry out C–H halogenation. This catalyst can effectively catalyze C–H bromination and chlorination even better than its homogeneous counterpart Pd(OAc)2. It also showed excellent reusability without loss of catalytic activity for ten cycles. A broad substrate scope was explored and moderate to excellent yields were obtained.