For the reaction shown,which of the compounds below would be the expected major,and final,organic product?

Question

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The reaction involves an alkylation of benzene with propyl bromide. The reaction conditions suggest that Friedel-Crafts alkylation will occur. Out of the given choices, only compound III is a Friedel-Crafts alkylation product of benzene with propyl bromide; products I, II, IV, and V are not consistent with Friedel-Crafts alkylation. Therefore, compound III is the expected major and final organic product.

For the Reaction Shown,which of the Compounds Below Would Be