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One-Step Preparation and NMR Properties of 5-Amino-2-formylbenzenesulfonic Acid

P. Wong-Wah-Chung, T. Liptaj, G. Mailhot, M. Bolte, and J. F. Pilichowski

aLaboratoire de Photochimie Moléculaire et Macromoléculaire, UMR 6505, CNRS, Université Blaise Pascal, F-63177, Aubiere, France

 

E-mail: j-francois.pilichowski@univ-bpclermont.fr

Received: 30 May 2002

Abstract: 5-Amino-2-formylbenzenesulfonic acid has been prepared in one-step reaction by oxidation of 4,4’-diaminostilbene-2,2’-disulfonic acid using ferric salts. Large differences in 1H spin-lattice NMR relaxation times are discussed and utilized for assessment of the ratio of the two possible conformers of the product.

Full paper in Portable Document Format: 575a355.pdf

 

Chemical Papers 57 (5) 355–358 (2003)

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