prepare acetylene from vicinal dihalide
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Answer: Dihalides are obtained from corresponding alkenes by the addition of halogens (Group 17 elements). Alkynes are obtained from vicinal dihalides by dehydrohalogenation which is carried out in two steps:
The first step is to prepare the unsaturated halides. The halides formed have a halogen attached to a double-bonded carbon. These halides are called vinylic halides which are not reactive in nature. These halides are made to react with the strong base which results in the formation of alkynes. Metal acetylides are used to convert small alkynes into large ones.
Explanation:
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