Identify the best reagents to convert 1-hexyne into 2-bromo-1-hexene.Select answer from the options below1 equiv HBr, ROORxs Br2, CCl41 equiv HBrxs HBr1 equiv. Br2, CCl4
Question
Identify the best reagents to convert 1-hexyne into 2-bromo-1-hexene.Select answer from the options below1 equiv HBr, ROORxs Br2, CCl41 equiv HBrxs HBr1 equiv. Br2, CCl4
Solution
The best reagent to convert 1-hexyne into 2-bromo-1-hexene is 1 equiv HBr.
Here's the step-by-step process:
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1-hexyne is an alkyne, which means it has a triple bond between two of the carbon atoms.
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When 1 equiv HBr is added to 1-hexyne, it will add across the triple bond.
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The bromine (Br) from HBr will attach to the more substituted carbon atom (Markovnikov's rule), which in this case is the second carbon atom.
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The result is 2-bromo-1-hexene, which is an alkene with a bromine atom on the second carbon atom.
The other reagents listed (excess Br2, CCl4, excess HBr, 1 equiv. Br2, CCl4) would either add bromine to both carbon atoms involved in the triple bond or not react in the desired way.
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