In this paper ten lactonic crown ethers weresynthesized, of which seven were new compounds.Theirstructures were confirmed by EA,IR,1HNMR andMS analysis.
成了10个内酯型冠醚化物，其中7个冠醚是新化物，其结构
由元素
析，及红外、核磁、质谱析证实。
的In this paper ten lactonic crown ethers weresynthesized, of which seven were new compounds.Theirstructures were confirmed by EA,IR,1HNMR andMS analysis.
成了10个内酯型冠醚化物，其中7个冠醚是新化物，其结构由元素析，及红外、核磁、质谱析证实。
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