Abstract
Chlorination of N-aroyl(arylsulfonyl)-2,6-di-tert-butyl-1,4-benzoquinone imines gave Z and E isomers of 4-arylsulfonylimino-2,6-di-tert-butyl-5,6-dichlorocyclohex-2-en-1-ones and Z isomers of 4-aroyl-(arylsulfonyl)imino-2,6-di-tert-butyl-5,5,6-trichlorocyclohex-2-en-1-ones, in which the tert-butyl group on the sp 3-hybridized carbon atom occupies exclusively the axial position. The formation of Z/E-isomeric structures is related to configurational stability of the chlorination products. The chlorination of 4-aroylamino-2,6-di-tertbutylphenols was found to be accompanied by replacement of one tert-butyl group by chlorine atom with formation of 4-aroylimino-6-tert-butyl-2,3,5,6-tetrachlorocyclohex-2-en-1-ones.
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Original Russian Text © A.P. Avdeenko, V.V. Pirozhenko, O.V. Shishkin, G.V. Palamarchuk, R.I. Zubatyuk, S.A. Konovalova, O.N. Ludchenko, 2008, published in Zhurnal Organicheskoi Khimii, 2008, Vol. 44, No. 6, pp. 818–824.
For communication VII, see [1].
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Avdeenko, A.P., Pirozhenko, V.V., Shishkin, O.V. et al. Halogenation of n-substituted p-quinone monoimines and p-quinone monooxime esters: VIII. Halogenation of N-aroyl(arylsulfonyl)-2,6-di-tert-butyl-1,4-benzoquinone monoimines and their reduced forms. Russ J Org Chem 44, 807–813 (2008). https://doi.org/10.1134/S1070428008060055
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DOI: https://doi.org/10.1134/S1070428008060055