A meta-selective-C-H alkenylation of phenol-derivatives employing a traceless organosilicon template.

A traceless organosilicon template-directed meta-selective-C-H alkenylation of phenols was realized with good yields and high selectivities. The template was readily removable through F- -promoted O-Si cleavage under extremely mild conditions or recyclable through a p-TSA catalyzed process. The product was successfully applied in the preparation of a series of meta-alkenylated aromatic compounds.