Evidence from 15N nuclear polarisation on the mechanisms of rearrangement of nitrocyclohexadienones
Abstract
Strong 15N nuclear polarisation is present in both the uncatalysed and acid-catalysed rearrangements of 4-methyl-4-nitrocyclohexa-2,5-dienone but is absent from the rearrangement of 2-methyl-2-nitrocyclohexa-3,5-dienone.