Electrophilic Addition of HBr to Ethylene

概述

Ethylene undergoes electrophilic addition with hydrogen bromide to form bromoethane. The pi electrons of the C=C double bond attack the electrophilic hydrogen of HBr, forming a carbocation intermediate that is then attacked by bromide. For unsymmetrical alkenes, Markovnikov's rule predicts the major product.

参与者

日常示例

This type of addition reaction is how the chemical industry converts simple alkenes from petroleum cracking into useful alkyl halides.

工业重要性

卤化氢与烯烃的加成反应是有机化学中的基础反应，用于合成卤代烃中间体，这些中间体是医药、农药和聚合物合成的重要原料。