Department of Chemistry, Luoyang Normal College, Luoyang 470022, China;
Department of Chemistry, Luoyang Normal College, Luoyang 470022, China;
Department of Chemistry, Luoyang Normal College, Luoyang 470022, China;
Department of Chemistry, Luoyang Normal College, Luoyang 470022, China;
4-methoxybutenolide, synthesis, (-imino acid, crystal structure, hydrogen bonding;