Which of the following would give more than one product when treated with xs HCl?Select answer from the options belowhex-2-ynehex-1-ynehex-3-ynehex-1-ene
Question
Which of the following would give more than one product when treated with xs HCl?Select answer from the options belowhex-2-ynehex-1-ynehex-3-ynehex-1-ene
Solution
The correct answer is hex-2-yne.
Here's why:
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Hex-1-yne and hex-1-ene, being terminal alkynes and alkenes, respectively, will only give one product when treated with excess HCl because the reaction will occur at the terminal carbon which is more substituted.
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Hex-3-yne will also give only one product because the reaction will occur at the more substituted carbon atom.
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However, hex-2-yne can give more than one product. This is because the alkyne is internal and not terminal, meaning the HCl can add across the triple bond in two different ways, leading to two different products.
So, hex-2-yne is the correct answer.
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