Conclusions
We discovered a new thermal cationotropic isomerization of 1-trifluoroacetyl-4,6,8-trimethylazulene to the 2-isomer when it is heated in 95% sulfuric acid at 195°.
Literature cited
A. G. Anderson, R. G. Anderson, and G. T. Hollander, J. Org, Chem.,30, 131 (1965).
Yu. N. Porshnev and E. M. Tereshchenko, Zh. Organ. Khim.,11, 462 (1974).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1643–1644, July, 1976.
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Porshnev, Y.N., Erikhov, V.I. & Cherkashin, M.I. Thermal cationotropic isomerization of 1 -trifluoroacetyl-4,6,8-trimethylazulene. Russ Chem Bull 25, 1558–1559 (1976). https://doi.org/10.1007/BF00920846
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DOI: https://doi.org/10.1007/BF00920846