Fluoroalkylation of Diazo Compounds with Diverse Rfn Reagents

Progress in the transition-metal-catalyzed or -free fluoroalkylation of diazo compounds with different types of fluoroalkyl (R-fn) transfer reagents is summarized in this review. Special attention is focused on the straightforward trifluoromethylation, gem-difluoroolefination, trifluoromethoxylation, fluoroalkylthiolation, and trifluoromethylselenolation of diazo substrates. The mechanistic insights and the application of some of the products are also discussed in this article. We believe that this review will inspire both young and experienced chemists to further study the direct fluoroalkylation of diazo compounds as an efficient and convenient way to build complex fluorine-containing molecules.