Chemistry of Heterocyclic Compounds p. 881 - 883 (1992)
Update date:2022-08-11
Topics:
Tkach, I. I.
Luk'yanets, E. A.
The direction of the reaction of coumarin derivatives with o-phenylenediamine depends on their structure, leading to 2-(2'-hydroxyphenyl)benzimidazole in the case of unsubstituted coumarin and to derivatives of benzimidazo<1,2-a>quinoline in the case of 7-amino-substituted coumarins.
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