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6) Catalysis by hydrogen bonding has also been suggested for the eneral Sander and W. P. Jencks, J. Am. Chem. Soc., 90,4377 (1968)l. However, in this reaction, proton transfer from the catalyzing acid is almost complete in the transition state, and the lifetime of the protonated intermediate is not known.acid catalyzed addition of hydrogen peroxide to benzaldehydes P [E. G.Abstract: Contrary t o implications in the literature, polyfluorovinyl ethers have been shown to f o r m unstable sultones with sulfur trioxide. N e a r 25 O C these sultones isomerize easily to P-carbonylsulfonate esters. A fluorovinyl diether was found to lead preferentially to cyclic sulfate, a convenient precursor t o a perfluoro a-diketone. Mechanisms for these transformations are proposed. These reactions offer superior routes to the t w o classes of difunctional fluoroorganics, P-carbonylsulfonates and adiketones. CH3OCF=CFCFzRCH3OCFpCF=CFR

A ligand free method has been developed for the amidation of benzylic hydrocarbons. A range of benzylic amides has been prepared with the use of dicumyl peroxide and a copper catalyst in good to excellent yields.

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