Citation:
ZHANG Zhi-Bin, YAN Wen-Peng, FAN Mei-Gong. An Efficient Synthesis Method for 1,10-Phenanthroline-5,6-dione and Its Mono-oxime[J]. Chinese Journal of Applied Chemistry,
;2005, 22(1): 103-104.
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phenanthroline(1) was oxidized by a mixture of concentrated sulfuric acid and concentrated nitric acid in the presence of sodium bromide to yield 1,10-phenanthroline-5,6-dione(2) in 90%. Compound 2 gave a mono-oxime(3) hydrochloric salt in nearly quantitive amount by reacting with equal molar hydroxylamine hydrochloride. The structures of the compounds were characterized by IR and 1H NMR spectroscopy. The method is more simple and efficient.
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