Abstract

In order to explore the anticipated nitrone-like property of the N-oxide group of 3, 2'-diquinolyl 1-oxide (2), some usual nucleophilic reactions of 2 were examined and it was found that all attempted reactions proceeded normally. Thus, treatment with sulfuryl chloride, benzoyl chloride-potassium hydroxide solution, and benzoyl chloride-potassium cyanide gave 2- and 4-chloro (3 and 4), 2-hydroxy (6), and 2-cyano (7) derivatives, respectively. Reactions in the presence of acylating agents with ethanol-triethylamine, ethyl cyanoacetate, and 1-morpholinocyclohexene also afforded the respective 2-substituted products (10, 12, and 13) in the usual way.

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