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Conformer-specific polar cycloaddition of dibromobutadiene with trapped propene ions
Diels-Alder cycloadditions are efficient routes for the synthesis of cyclic organic compounds. There has been a long-standing discussion whether these reactions proceed via stepwise or concerted mechanisms. Here, we adopt an experimental approach to explore the mechanism of the model polar cycloaddition of 2,3-dibromo-1,3-butadiene with propene ions by probing its conformational specificities in the entrance channel under single-collision conditions in the gas phase. Combining adoi:10.5451/unibas-ep85889 fatcat:fwnrrhtygbdt3axuh6ybviif7e