“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	plant breeding for disease resistance plant cadmium toxicity plant calcium deficiency symptom plant cell biology plant cell culture bioreactor plant cell culture medium plant cell embryogenesis plant cell proliferation plant cell totipotency plant charcoal plant chemistry diagnosis plant chemotaxonomy plant chlorine deficiency symptom plant chlorine nutrition plant chorology plant cold resistance plant community plant community landscape plant comparative embryology plant construction conditions for thermal power plant plant copper deficiency symptom plant copper nutrition plant copper toxicity plant crude drugs plant cultivation non-point source pollution control technology

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。