Excessive absorption or lack of halogen group elements could result in disease.
过量摄入或缺乏卤族元素，都可能导致疾病的发生。
This type of reaction has signicant advantages, the alkyne proceeds the coupling reaction with the halogen atom as the leaving group.
卤原子作为炔烃三键活化基团和定位基，炔烃三键发生亲电加成反应；
Any of a group of substances, most often synthetic organic halogen compounds, that irritate the mucous membranes of the eyes, causing a stinging sensation and tears.
一类物质，大部分是合成的有机卤化物，能刺激眼睛黏膜引起疼痛和流泪。
Halogen atom could activate the triple bond and as the directing group, the triple bond occurs the electrophilic addition reaction.
卤原子作为保护基，代替末端炔发生碳-氢官能团化反应。
Halogen atom could activate the triple bond and as the directing group, the triple bond occurs the electrophilic addition reaction.
卤原子作为保护基，代替末端炔发生碳-氢官能团化反应。
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