Aroyl [bis (4-hydroxycoumarin-3-yl)] methanes in reactions with 1, 2-diaminobenzenes

…, LL Gozalishvili, FG Yaremenko, OV Shishkin…

Index: Kolos; Gozalishvili; Yaremenko; Shishkin; Shishkina; Konovalova Russian Chemical Bulletin, 2007 , vol. 56, # 11 p. 2277 - 2283

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Citation Number: 11

Abstract

Abstract The reaction of aroyl [bis (4-hydroxycoumarin-3-yl)] methanes with 1, 2- phenylenediamines in Pr i OH 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.