The Claisen rearrangement of benzylic substrates (benzyl vinyl ethers) has received considerably less attention than its well-known aliphatic and normal aromatic variants. Here, we review the rearrangement of both benzylic and heterobenzylic substrates, with examples of the reaction’s use in the synthesis of natural products and drug-like molecules.1 Introduction2 Early Attempts at the Benzyl-Claisen Rearrangement3 Successful Benzylic Examples4 Heterobenzylic Examples5 Conclusion