Abstract:The mechanism of the halogen‐transfer isomerization of halogenated cyclopentene was investigated over a NH4F catalyst in DMF. This catalytic system was to have the unique ability to isomerize halogenated cyclopentene selectively. The process of migration of the F atom in the 3‐position on the C(sp3) atom to the 4‐position on the C(sp3) atom is in chemical equilibrium, whereas the process of migration of the F atom in the 2‐position on the C(sp2) atom to the 3‐position on the C(sp3) atom is not. Therefore, halo… Show more
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