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邻基参与
释义
邻基参与
Encyclopedia
理学
邻基参与
释
neighboring group participation
邻基参与
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。又称邻助作用。
Chemistry
>有机化学>有机合成化学>释义
neighboring group participation
邻基参与
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cerebronic acid
cerebron,phrenosin
cerebroside
cerebrospinal fluid
cerebrospinal fluid -brain barrier
cerebrospinal fluid circulation
cerebrospinal fluid rhinorrhea
cerebrospinal ganglion
cerebrovascular disease
cerebrovascular malformations
cerebrum
Ceremonial Buildings Site in Southern Suburb of Chang 'an City,Han Dynasty
Ceremonial Parades
Ceremony
ceremony for Saixi opera performance
ceremony music(China)
ceremony of hunting-like military drill
Ceremony of Offering Captive
ceremony of praying for blessings from the god of sea
ceremony of Zhuangju opera performance in Yunnan
ceremony to save the preta
Cereng
Cerenkov counter
Cerenkov effect
Cerenkov radiation
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