Summary
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1.
The action of free bromine on 2,6-dialkyl-4-bromophenols in presence of proton acceptors leads to the formation of o-quinobromides (2,6-dialkyl-2,4-dibromo-3,5-cyclohexadien-1-ones).
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2.
The stability of the o-quinobromides is related to their rearrangement into their isomers of p-quinonoid structure (2,6-dialkyl-4,4-dibromo-2,5-cyclohexadien-1-ones).
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3.
A study was made of the behavior of the quinobromides in presence of acid agents and when heated.
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The authors thank N. M. Emanuel' for constant interest in this work.
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Volodk'kin, A.A., Ershov, V.V. Sterically hindered phenols communication 12. Dialkyldibromocyclohexadienones. Russ Chem Bull 12, 133–137 (1963). https://doi.org/10.1007/BF00846963
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DOI: https://doi.org/10.1007/BF00846963