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(12 pts total) 21-23. Mechanisms: Provide a reasonable, detailed, stepwise mechanism for: (4 pts, all, if...
18-20. Spectroscopy: (4 pts) 20. Analyze the 1H NMR spectroscopic data provided for C4H7Bro. Provide degrees of unsaturation. Provide the appropriate structure. JA 2.2 (3H, singlet), De 83.5 (2H, triplet), 8c 4.5 (2H, triplet) (ppm) (8 pts total) 21-22. Mechanisms: Provide a reasonable, detailed, stepwise mechanism for: pts, all, if completely correct, or nothing) 21. ... the base-promoted transesterification of ethyl benzoate with sodium methoxide. (4 pts, all, if completely correct, or nothing) 22. the acid-catalyzed enolization of propanone. (10...
(8 pts) 4. Provide a reasonable, detailed, stepwise mechanism for the acid-catalyzed hydrolysis of the following. Include appropriate resonance structures. (Hint: consider the CEO to CoN mechanism.)