SEARCH Articles Figures Tables Carbocation intermediates Carbocation pinacol rearrangement Carbocation rearrangements Carbocations intermediates Carbocations pinacol Carbocations pinacol rearrangement Carbocations rearrangements Intermediate rearrangement Pinacol Pinacol rearrangement Pinacolate Pinacolation Pinacolizations Pinacols Pinacols rearrangement Rearrangement carbocation intermediate