Answer:
para
Explanation:
Ortho (o), meta (m), and para (p) refer to the location of the chloride substitution compared to the methyl group on toluene (toluene is characterized by the methyl at the top).
This reaction involves a conjugate addition reaction followed by an intramolecular Claisen condensation. The steps involved are
as follows: 1. Conjugate addition of methyl carbanion (from the Gilman reagent) to form enolate ion 1; 2. Cyclization to form tetrahedral intermediate 2; 3. Collapse of the tetrahedral intermediate and expulsion of methoxide ion completes the reaction to form the final product. Write out the reaction on a separate sheet of paper, and then draw the structure of tetrahedral intermediate 2.
1 answer:
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