Question: When styrene is refluxed with aqueous sulfuric acid, two styrene dimers are formed as the major products. One of these styrene dimers is 1, 3-diphenyl-1-butene;

When styrene is refluxed with aqueous sulfuric acid, two “styrene dimers” are formed as the major products. One of these styrene dimers is 1, 3-diphenyl-1-butene; the other is 1-methyl- 3-phenylindan. Suggest a reasonable mechanism for the formation of each of these compounds.

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