V2EX hydrohalogenation

Hydrohalogenation

释义 Definition

氢卤化反应 / 氢卤加成(hydrohalogenation):在有机化学中,指氢卤酸(HX,如 HCl、HBr、HI)加成到不饱和键(通常是烯烃或炔烃的 C=C / C≡C)上,生成卤代烃的反应。最常见的是对烯烃加成生成卤代烷烃;在常规条件下常符合马氏规则(Markovnikov’s rule),某些条件(如过氧化物存在)可能出现反马氏加成(尤其是 HBr)。

发音 Pronunciation

/hadrohldnen/

例句 Examples

Adding HBr to propene is a hydrohalogenation reaction.
向丙烯加成 HBr 是一个氢卤化(氢卤加成)反应。

Under peroxide conditions, the hydrohalogenation of an alkene with HBr can proceed via a radical mechanism to give the anti-Markovnikov product.
在过氧化物条件下,烯烃与 HBr 的氢卤化反应可通过自由基机理进行,从而生成反马氏规则产物。

词源 Etymology

该词由三部分构成:**hydro-**(表示“氢”)+ halogen(“卤素”,如氯、溴、碘)+ -ation(表示“过程/反应”)。字面意思就是“氢与卤素相关的加成过程”,对应有机反应中 HX 对不饱和键的加成。

相关词 Related Words

文学与著作 Literary Works

  • Organic Chemistry(Jonathan Clayden, Nick Greeves, Stuart Warren)在烯烃加成反应章节中讨论 HX 加成与区域选择性时常出现该术语。
  • Organic Chemistry(Paula Yurkanis Bruice)讲解烯烃的亲电加成、过氧化物效应与反马氏加成时会使用“hydrohalogenation”。
  • March’s Advanced Organic Chemistry(Smith & March)在加成机理与区域选择性/自由基条件讨论中可见该词或等同表述。
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