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首页> 外文期刊>Synthetic Communications >Chromium(VI) oxide-mediated oxidation of polyalkylpolypyridines to polypyridine-polycarboxylic acids with periodic acid
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Chromium(VI) oxide-mediated oxidation of polyalkylpolypyridines to polypyridine-polycarboxylic acids with periodic acid

机译：铬（VI）氧化物介导的聚烷基吡啶氧化与含有碘酸的聚吡啶 - 多元羧酸

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摘要

4,40-Dicarboxy-2,20-bipyridine was synthesized quantitatively by chromium(VI) oxide-mediated oxidation of 4,40-dimethyl-2,20-bipyridine or 4,40-diethyl-2,20-bipyridine with periodic acid as the terminal oxidant in sulfuric acid. 5,50-Dicarboxy-2,20-bipyridine and 6,6’-dicarboxy-2,20-bipyridine were also synthesized by the method from the corresponding dimethyl bipyridines in excellent yields. 4,40,400-Tricarboxy-2,20:60,200-terpyridine was obtained in 80% yield from 4,40,400-triethyl-2,20:60,200-terpyridine, and 4,40,400,4000-tetracarboxy- 2,20:60,200:600,2000-quaterpyridine was obtained in 72% yield from 4,40,400,4000-tetraethyl-2,20:60,200:600,2000-quaterpyridine by the same procedure.
机译：通过铬（VI）氧化铝（VI）氧化铝的4,40-二甲基-2,2,20-吡啶或4,40-二乙基-2,20-20-2-20-与碘酸的氧化氧化合成4,40-二羧酸-2,20-20-22-200-2-2-2-22-22-2-22-2-22-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 作为硫酸中的末端氧化剂。 通过来自相应的二甲基双滤网的方法，还通过优异的产率合成5,50-二羧酸-2,20-2-20-二吡啶和6,6'-二羧酸-2,20-2-2-2-2-2-2-2-2-二嘧啶。 在4,40,400-三乙基-2,20：60,200-三吡啶的80％收率中获得4,40,400-三羧酸-2,20：60,200-萜烯吡啶，4,40,400,400-四羧酸-2,20：60,200：600 ，通过相同的方法，在4,40,400,400-四乙基-2,20：60,200：600,2000- Quatery吡啶中获得2000- Quaterpyridine以72％的产率获得72％。

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