Question

Please show work and explain in detail. Thanks

1) Select the reagents needed for the following reaction: a. H2, Pd-C b. HCI c. H2, Lindlar catalyst d. H2O, H2SO4

2.

2) Consider the mechanism for acid-catalyzed hydration of alkenes. Select the intermediate(s) for the following reaction: H20

3) Consider the mechanism for the halogenation of alkenes. Select the intermediate(s) for the following reaction: Br2 JBr + .

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Answer #1

1.) option c.) is correct. Pd in BaSO4 is lindars catalyst it's a heterogeneous catalyst. It's used in selective hydrogenation of alkyne and gives cis alkene. Pd is partially poisoned means reactivity of Pd decreases.

2. option e. is correct

3.) option e. is correct

I Hin Lindlar latalyst Hao umediate side attack in (Y Bro hur br from b. side attack

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