1-Phenyl-2-butene has an ultraviolet absorption at lmax 5 208 nm (e 5 8000). On
Chapter 15, Problem 15.46(choose chapter or problem)
1-Phenyl-2-butene has an ultraviolet absorption at lmax 5 208 nm (e 5 8000). On treatment with a small amount of strong acid, isomerization occurs and a new substance with lmax 5 250 nm (e 5 15,800) is formed. Propose a structure for this isomer, and suggest a mechanism for its formation.
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