Search results for "Crossover experiment"

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1,3-Benzyl Migration in Iminium Ions: Evidence for a Fast Free-Radical Chain Reaction

2011

The “exocyclic” 1,3-benzyl shift observed in iminium salts derived from 1-benzyl-1,2,3,4-tetrahydroisoquinolines is related to the “endocyclic” Knabe rearrangement. A crossover experiment, isotopic labelling, the study of initiators and inhibitors as well as DFT calculations of gas-phase model structures provide evidence for a free-radical pathway under kinetic entropy control that is not affected by “slow” radical traps.

Crossover experimentChemistryLabellingOrganic ChemistryIminiumPhysical and Theoretical ChemistryPhotochemistryChain reactionIonEuropean Journal of Organic Chemistry

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