Abstract
Neat imine 1a with alkylcyanoacetate 2 leads to new cyclohexenes by Michael-Michael initiated ring closure reaction at RT or under classical heating. Surprisingly, this cyclohexene is not formed under microwave. This is the first example of a reaction working under classical activation and not under microwaves. A mechanism and an explanation are proposed. Keywords: physical organic chemistry, solvent-free reactions, non thermal microwave effect, cyclohexenes, electrophilic alkenes
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