1.1. Compound B is 1-bromobutane. Reaction 1 converts Compound A to 1-bromobutane using Br2. Given that Reaction 6 is an addition reaction from Compound A, Compound A must be an alkene (bu

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4.1.
4.1.1. Compound B is 1-bromobutane. Reaction 1 converts Compound A to 1-bromobutane using $\text{Br}_2$. Given that Reaction 6 is an addition reaction from Compound A, Compound A must be an alkene (but-1-ene). The formation of 1-bromobutane from but-1-ene typically occurs via the addition of $\text{HBr}$. If the reagent is strictly $\text{Br}_2$, then Compound B would be 1,2-dibromobutane, which contradicts the given name. Assuming the intent is to form 1-bromobutane from an alkene, and considering the "