Synthesis of Benzoxazolo[3,2-a]pyridinium Zwitterions

Zhang Shengling,Huang Zhishu,Gu Lianquan

CHINESE JOURNAL OF ORGANIC CHEMISTRY（2010）

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摘要

Five benzoxazolo[3,2-a]pyridinium zwitterions were synthesized through the reaction of 4-hydroxycoumarins with p-benzoquinone and 2-methoxypyridine in aqueous acetone (V: V=1 : 1) at room temperature. The structures of these compounds were determined by MS, (1)H NMR techniques and elemental analysis.

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关键词

4-hydroxycoumarin,p-benzoquinone,zwitterion

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