v-TRIAZOLINES. PART XXVII. ISOMERIZATION REACTIONS OF SUBSTITUTED METHYL-CYCLOPENTEN-3- AND -2-ONES.

Article abstract of DOI:10.1016/S0040-4020(01)86845-9

Substituted 3-cyclopenten-1-ones 2a,b, derived from the rearrangement of 1, were isomerized under thermal conditions to afford the corresponding 2-cyclopent-1-ones 4, 5b, respectively.When the isomerization was performed with basic catalysis, 2a afforded