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Draw the alkene formed when 1-heptyne is treated with one equivalent of HBr.
♦ Relevant knowledgeHBr 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.
Alkyne and hydrogen halide are combined to make an alkenyl-halide product. This reaction is a continuation of Markovnikov’s addition pathway.
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.