请输入您要查询的字词:
单词
邻助作用
释义
邻助作用
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
Leading Climbing
leading coefficient
leading diagonal
leading digit
leading-digit phenomenon
leading edge
leading edge fillet
leading-edge suction
leading-edge vortex
leading eigenvalue
leading electrode
leading electrolyte
leading element
leading exponent
leading group for coordinated development of Beijing-Tianjin-Hebei of China
leading group for schistosomiasis prevention and control of the state council
Leading Group on Aging Work of National Health and Family Planning Commission
leading hemisphere
leading ideal
leading indicator method
leading industry
leading limb
leading line of bearing from an objective beyond chart
leading logarithm
leading marks
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2025/7/25 14:09:47