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Home/ Questions/Draw the alkene formed when 1-heptyne is treated with one equivalent of HBr.
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tmntuto
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tmntuto
Asked: April 11, 20222022-04-11T18:33:13+00:00 2022-04-11T18:33:13+00:00In: chemistry

Draw the alkene formed when 1-heptyne is treated with one equivalent of HBr.

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Draw the alkene formed when 1-heptyne is treated with one equivalent of HBr.


♦ Relevant knowledge
HBr is Hydrogen bromide. It is a hydrogen-halide made up of bromine and hydrogen. It is a colorless gas that disintegrates in water, and then forms an acid called hydrobromic which is saturated to 68.85 percent HBr by weight temperated at room. 

alkenehbrheptyne
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    Thomas Smith
    2022-04-12T00:14:56+00:00Added an answer on April 12, 2022 at 12:14 am
    Concepts and Reason

    Alkyne and hydrogen halide are combined to make an alkenyl-halide product. This reaction is a continuation of Markovnikov’s addition pathway.

    Fundamentals

    Markovnikov’s addition: Markovnikov’s addition of hydrogen to alkyne creates the most stable alkene.

    Markovnikov’s rule states that hydrogen halide with a negatively charged addendum is linked to carbon atoms.

    Below is an illustration of the alkyne structure.

    HBr reaction to the hept-1-yne shown below.

    In this addition reaction, nucleophile is Br–(bromide ion).

    Below is a nucleophilic attack against the intermediate

    The general reaction is as follows.

    Ans:

    Below is a picture of the alkene produced during the addition reaction.

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