Novel lactonization of ethenetricarboxylate derivatives: Intermolecular trapping of alkenes
(Chemical Equation Presented) A novel cyclization of 1,1-diethyl 2-tert-butyl ethenetricarboxylate (1a) in the presence of a Lewis acid afforded a 5,5-dimethyl-γ-lactone derivative 2a. The reaction process has been shown to arise from formation by trappin