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A novel, sulfonyl rhodamine hydrazide chemodosimeter displayed highly selective and sensitive recognition of Cu 2+ in aqueous media, via colour change from colorless to pink. The colour change that occurred as a result of complexation with Cu 2+ can be attributed to spirolactam ring-opening and hydrolysis of the hydrazide unit to afford C.I. Acid Red 52 (Rhodamine B) in the presence...
An efficient one-pot synthesis of fluorescent hydroxyl naphthalene-1,4-dione derivatives by a simple, atom-economical and three-component reaction of 2- hydroxynaphthalene-1,4-dione, aromatic aldehydes and heterocyclic or carbocyclic amines in the presence of a catalytic amount of InCl 3 in refluxing water is reported. The structures of the compounds were confirmed by IR, 1 H NMR,...
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