BENZOAZACROWN ETHERS AND DIBENZODIAZACROWN ETHERS WITH PERIPHERAL CHROMOPHORE GROUPS

Article abstract of DOI:10.1007/BF00506422

Arylazo derivatives of benzoaza- and dibenzodiazacrown ethers were obtained by diazo coupling of benzoaza- and dibenzodiazacrown ethers with 4-nitrobenzenediazonium chloride.A chromophore effect is observed in the reaction of 13-(4-nitrophenylazo)-2,3,5,6,8,9-hexahydro-10H-benzo<1,4,7,10>trioxaazacyclododecene with lithium ions in an aqueous organic medium in the presence of tetramethylammonium hydroxide.