Direct Nitration of 3-Arylamino-2-chloro-1,4-naphthoquinones

Abstract

A convenient two-step synthesis of mononitro and dinitro derivatives of the title compounds is reported. The Michael type addition of aromatic amines to 2,3-dichloro-1,4-naphthoquinone, is followed by mixed acids nitration to yield nitro aromatic quinones hard to get or unattainable before.

Key words

quinones - Michael additions - aromatic amines - nitrations - nitroquinones

References

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Crystallographic data were deposited at Cambridge Crystallographic data Centre, 12 Union Road, Cambridge CB2 IEZ, UK and are available from there under the deposition number CCDC 255861.