Thermal rearrangement of some 1- and 2-substituted azulenes to naphthalenes
Abstract
The products from thermolysis at 440 °C of [2-2H]azulene, 2-[13C]methyl[2-13C]azulene, 1- and 2-cyanoazulene, and 1,2-dimethylazulene are reported. The results, taken with those published previously, show that the migration of C-2 of azulene (together with its attached group) to the α-position of the naphthalene is a general phenomenon, which has occured in about one-third of the products.
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