Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (6): 101-103.

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Acidic Cyclization of 3-(Substituted)Anilino-Methylene)-6-Methyl-α,γ-Pyronone

Li Zhengming, Zou Xiajuan, Wang Suhua   

  1. Elemento-Organic Chemistry Institute, Nankai University, Tianjin 300071
  • Received:1994-03-01 Revised:1994-07-13 Published:1994-12-10 Online:1994-12-10

Abstract: The cyclization of 3-(substituted anilino-methylene)-6-methyl-α,γ-Pyronone was carried out in the presence of hydrochloric acid. Seven N-substituted phenyl-6-methyl-4-oxo-dihydro-pyridine-3-carboxylic acids were synthesized by cyclization with their structures being identified by elemental and NMR analyses.

Key words: cyclization, pyronone, oxo-pyridine carboxylic acid, synthesis