CHEM 2312 Midterm: CHEM 2312 GT Examp3i
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E3 practice i: (32 points) circle the letter on the right which corresponds to the answer to each question. Ff: (38 points) (a) provide the structure of the major organic products obtained from the first six reactions, reagents/conditions for the seventh reaction, and starting material for the eighth reaction. O: h3o, etmgbr, nh4cl, h2o, nabh4, h2o. Oh: 3-hexanone, h3o+ (b) draw two resonance structures of the key reactive intermediate in the reaction of hemiacetal a with methanol in the presence of h2so4 to form acetal b. B: (30 points) the following transformations cannot be completed in a single step. Provide a sequence of reactions to perform each transformation, showing the reagents and structures of all isolated synthetic intermediates. The synthesis must use the given starting materials; you may also use any other starting materials with 3 or fewer carbon atoms. Do not show mechanisms or the structures of reactive intermediates.
