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Unexpected Formation of 4-[(1-Carbamoyl-3-oxo-1,3-dihydro-2-benzofuran-1-yl)amino]benzoic Acid from 4-[(3-Amino-1-oxo-1H-2-benzopyran-4-yl)amino]benzoic Acid
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Short Note


Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, UK
Academic Editor: Vincenzo Piccialli
Molbank 2022, 2022(3), M1406;
Received: 15 June 2022 / Revised: 25 June 2022 / Accepted: 4 July 2022 / Published: 7 July 2022
(This article belongs to the Section Organic Synthesis)
The reaction of 2,4-difluoronitrobenzene with an excess of aniline at 175 °C led to the isolation of an unexpected brown quinone substituted with two phenylamino groups and one phenylimino group. This product was easily distinguished from other expected derivatives because it is brown rather than yellow. The UV/Vis has a weak long wavelength absorption at 480–600 nm accounting for the colour. View Full-Text
Keywords: aniline; nitrobenzene; 2,4-difluoronitrobenzene; Irgacure PAG 103 aniline; nitrobenzene; 2,4-difluoronitrobenzene; Irgacure PAG 103
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MDPI and ACS Style

Plater, M.J. 2,6-Bis(phenylamino)-4-(iminophenyl)benzoquinone. Molbank 2022, 2022, M1406.

AMA Style

Plater MJ. 2,6-Bis(phenylamino)-4-(iminophenyl)benzoquinone. Molbank. 2022; 2022(3):M1406.

Chicago/Turabian Style

Plater, M. John. 2022. "2,6-Bis(phenylamino)-4-(iminophenyl)benzoquinone" Molbank 2022, no. 3: M1406.

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