About KIKUGAWA Yasuo
About Josai Univ., Saitama, JPN
About Heterocycles
About cation
About nitrogen compound
About nitrogen heterocyclic compound
About annulation
About ニトレニウムイオン
About Nitrogen heterocycles in general
About Cyclization reaction,ring-opening reaction
About 調製
About 有機化学
About 応用