亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process.偶氮杂环丙烷是一类重要的 、 环内张力颇大的化合物.The diazirines are interesting , highly strained ring systems.在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.Under the opti...
Elaborating language materials is another useful thinking activity.文字的加工是另一种思考训练.We take up this issue by elaborating the detailed definition of work experience.本文试图透过对工作经历的精细定义来探讨这个议题.More sophisticated developmental pr...