- HYDROBROMINATION OF N-ARYLSULFONYL-1,4-BENZO(NAPHTHO)QUINONE MONO- AND DIIMINES
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The hydrobromination of N-arylsulfonyl-1,4-benzo(naphtho)quinone monoimines led to 2-bromo-4-arenesulfonamidophenols (or the corresponding 1-naphthols) and 2,6-dibromo-4-arenesulfonamidophenols.Their oxidation gave N-arylsulfonyl-2-bromo-1,4-benzo(naphtho
- Avdeenko, A. P.,Velichko, N. V.
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p. 986 - 991
(2007/10/02)
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- BROMINATION OF 4-ARENESULFONAMIDOPHENOLS (OR 1-NAPHTHOLS) AND N-ARYLSULFONYL-1,4-BENZO(NAPHTHO)QUINON-4-IMINES
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2,3,6-Tribromo-N-phenylsulfonyl-1,4-benzoquinon-4-imines are formed on bromination of 4-arenesulfonamidophenols and N-aryl-sulfonyl-1,4-benzoquinon-4-imines but 2-bromo-N-arylsulfonyl-1,4-naphthoquinon-4-imines are formed from 4-arenesulfonamido-1-naphthols and N-arylsulfonyl-1,4-naphthoquinon-4-imines.
- Avdeenko, A. P.,Velichko, N. V.
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p. 1687 - 1692
(2007/10/02)
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- REACTION OF HYDROGEN BROMIDE WITH N-(p-TOLYL)- AND N-(p-TOLYLSULFONYL)-1,4-BENZOQUINONE MONOIMINES
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In the reaction of hydrogen bromide with N-(p-tolyl)-1,4-benzoquinone monoimines bromination of the p-tolyl fragment takes place as well as nucleophilic addition.Bromination is fully suppressed by the addition of resorcinol to the reaction mass.In the case of N-(p-tolylsulfonyl)-1,4-benzoquinone monoimine the products from the entry of two bromine atoms at the ortho position to the oxygen atom are formed sucessively.
- Toropin, N. V.,Burmistrov, K. S.,Burmistrov, S. I.,Zaichenko, N. L.
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p. 894 - 899
(2007/10/02)
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