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Organic Chemistry
Found in: Page 426

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Short Answer

Convert each compound to hex-1-yne,

a. b.






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Step by Step Solution

Preparation of alkyne from geminal dihalide

Geminal dihalides are treated with a strong base to remove the halides and hydrogens to form alkyne. The pathway of the elimination reaction is E2. The general reaction scheme is given below:

Conversion of the compounds to hex-1-yne

a.The given compound is a dihalide and thus can directly be converted to an alkyne upon treatment with 2 equivalent . The reaction is shown below:

Conversion of geminal halide to alkyne


The given compound has one halide attached to the alkene group and can directly be converted to alkyne using one equivalent .


The given compound is a simple alkene and has to be converted to a dihalide by treating it with chloride. It is further converted to alkyne using a similar reagent.

Alkyne formation

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