Fluoroalkylation of Porphyrins: Generation of 2- and 20-Perfluoroalkyl-5,10,15-triarylporphyrin Radicals and their Intramolecular Cyclizations - Chen, Liang; Jin, Li-Mei; Guo, Can-Cheng; Chen, Qing-Yun (Synlett, 2005)