Abstract
A low-molecular weight analog of the vinyl chloride–maleic anhydride copolymer, chloromethylsuccinic anhydride gives rise to a new type of prototropic tautomerism, cyclic anhydride–enol, with formation of quasiaromatic enol and dienol derivatives. The ratio of the anhydride and enol tautomers in solution at room temperature is 7 : 1.
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Filimoshkin, A.G., Kosolapova, V.F., Petrenko, T.V. et al. New Type of Prototropic Tautomerism Involving Carbon, Hydrogen, and Oxygen Atoms. Russian Journal of Organic Chemistry 40, 462–466 (2004). https://doi.org/10.1023/B:RUJO.0000036062.82821.ab
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DOI: https://doi.org/10.1023/B:RUJO.0000036062.82821.ab