“neighboring group assistance”的概念、定义、翻译、参考文献-科学参考

单词	neighboring group assistance
释义	neighboring group assistance Encyclopedia 理学邻助作用释 neighboring group assistance; anchimeric assistance邻助作用进行亲核取代反应的底物分子，若同时存在亲核的基团和离去基团，且这两种基团在空间位置上的距离也适当，则在亲核取代反应的条件下，将优先发生分子内的亲核取代反应，生成环状产物，从而影响反应的立体选择性、区域选择性或活性的现象。又称邻基参与。
随便看	planning of Yunnan Dian Zhong New Area planning of Zhengzhou planning on comprehensive disaster resistance and prevention planning outline of scenic regions planning pattern planning permit planning prediction model planning process planning process of scenic and historic area planning,programming,budgeting and execution system planning river regulation guidelines system planning road alignment survey planning strategy planning study of wind power projects planning system planning text Planning Theory Planning Theory Forum planning theory of communication planning under nondeterministic environment planning unit planning verification planning verification after the completion of the construction project planning vision plano-concave lens

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