Abstract Methylene ketones and aldehydes by simple, direct methylene transfer: 2‐methylene‐1‐oxo‐1,2,3,4‐tetrahydronaphthalene product: 2‐METHYLENE‐1‐OXO‐1,2,3,4‐TETRAHYDRONAPHTHALENE reactant: 16.57 g (0.075 mol) of N ‐methylanilinium trifluoroacetate