Abstract
The reaction of aroyl[bis(4-hydroxycoumarin-3-yl)]methanes with 1,2-phenylenediamines in PriOH is accompanied by the recyclization to 8-R-or 7-R-4-(2-hydroxyphenyl)-1,5-benzodiazepin-2-ones, whereas the reaction with o-phenylenediamine and its 4-methyl-substituted derivatives in MeOH produces organic ionic salts of the bis-coumarin anion with monoprotonated o-phenylenediamine as the cation.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2200–2205, November, 2007.
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Kolos, N.N., Gozalishvili, L.L., Yaremenko, F.G. et al. Aroyl[bis(4-hydroxycoumarin-3-yl)]methanes in reactions with 1,2-diaminobenzenes. Russ Chem Bull 56, 2277–2283 (2007). https://doi.org/10.1007/s11172-007-0359-7
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DOI: https://doi.org/10.1007/s11172-007-0359-7