CHEM 345 Final: CHEM 345 Final Exam 2016 Solutions
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Models are allowed. ff: (32 points) show the major product or products expected from each react; l. ~ 6r" Misconduct will lead to failure in the course. r: d . I -for e:c~ c -i] for tj() s. ,fekadi~j. Ch3 li, thf: small amt hci in h20. L-1 ~~ : (7 points) (a) provide a mechanism (curved arrows) for the reaction shown below. B (b) the 1h nmr spectrum of molecule b shown signals for 8 hin the range 67. 0-7. 6. In contrast, in the 1 h nmr spectrum of 1,3-cyclohexadiene (c below), the signals furthest to the left (farthest downfield) are for 4 h in the range 05. 8-5. 9. Very briefly (no more than one sentence) explain why the signals for b are at larger 6 values relative to the signals for c. Name - - - - - - (racemic) 6: (24 points) provide a mechanism (curved arrows) for each reaction shown below.
