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1. Rank the following compounds in order of increasing stability (least to most stable). As you answer this question, think of why (give reasons) one molecule is more or less stable than another. 2. Predict the MAJOR product(s) for the reaction below. Pay close attention to stereochemistry. Provide a mechanism as to how you arrive with your answer. If your compound is chiral, indicate the configuration [(R) or (S)] of the product(s). H-CI 3. Predict the MAJOR product(s) for the following reactions. Indicate stereochemistry where available. H-Br A0 oc
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Answer #1

1 Molecule which have least number of double bonds, that have more stability and has lower in energy As we can see, molecule

Among the molecules B, C, and D, the molecule D is stable because it has three conjugated double bonds Conjugated double bond

More substituted alkene less substituted alkene Therefore, less substituted double bond reacts with HBr as follows: Br H Br (

40 °C 0 °C HBr HBr Br н Br H H T .. T

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