In the presence of a Lewis acid, compound 1 rearranges, via intermediate 2, to afford
Chapter 6, Problem 6.64(choose chapter or problem)
In the presence of a Lewis acid, compound 1 rearranges, via intermediate 2, to afford compound 3 (Org. Lett. 2005, 7, 515517): O O Ph O O Ph O Ph O 1 2 3 @ ! (a) Draw curved arrows showing how 1 is transformed into 2. Note that the Lewis acid has been left out for simplicity. (b) Draw curved arrows showing how 2 is transformed into 3. (Hint: It may be helpful to redraw 2 in a different conformation.)
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