Conclusions
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1.
Sulfonation and chlorosulfonation of 2,3-dichloro-1,4-naphthoquinone in the 6 position of the naphthoquinone has been effected by heating with oleum or with chlorosulfonic acid.
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2.
The corresponding 6-sulfonamide derivatives of 2,3-dichloro-1,4-naphthoquinone have been obtained by the action of ammonium carbonate or morpholine on the 6-sulfonyl chloride under mild conditions.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 855–857, April, 1985.
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Shishkina, R.P., Mamatyuk, V.I. & Fokin, E.P. Sulfonation and chlorosulfonation of 2,3-dichloro-1,4-naphthoquinone. Russ Chem Bull 34, 775–778 (1985). https://doi.org/10.1007/BF00948057
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DOI: https://doi.org/10.1007/BF00948057