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- 3) Explain how and why the reaction below results in the observed regiochemistryand/or stereochemistry.Draw the reaction mechanism and predict the product (with stereochemistry) andbyproduct of the following reaction. Indicate their polarities.Provide to llaving Br a detailed, step by step mechanism for the reaction OCH₂CH3₂ OCH₂CH3 OCH₂ CH3
- Which of the following reactions willactually yield the indicated product?What's the mechanism for the following reaction scheme?Draw a detailed mechanism for the FeBr3@catalyzed reaction of ethylbenzene with bromine, and show why the sigma complex (and the transition state leading to it) is lower in energy for substitution at the ortho and para positions than it is for substitution at the meta position.
- This addition of HBr to (Z)-2-bromobut-2-ene takes place regioselectively, with the Br preferentially adding to the alkene C that does not already possess a Br atom. (a) Provide a detailed mechanism for this reaction, including initiation and propagation steps. (b) Explain why this regiochemistry is observed. Br Br HBr ROOR BrExamine the following pericyclic reactions.Tell whether it is an electrocyclic reaction, a cycloaddition reaction, or a sigmatropic rearrangement.Classify the following sigmatropic rearrangement and determine whether it takes place readily under thermal or photochemical reaction conditions.