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Unformatted text preview: UCLA Chemistry 30C Winter 2012 Second Midterm Examination Practice Paper (50 minutes) On my honor, I have neither given nor received any aid on this examination. KEY Name (LAST, First) (in ink) ID Number (in ink) Signature (in ink) Gregg Barcan / Joel Mackey / Steven Lopez Circle your TA (in ink) Instructions 1. Before you start answering, check that there are a total of 6 pages (including this page). 2. You may answer in ink or pencil. However, answers written in pencil cannot be regraded. 3. Answer ALL questions. Fit your answers in the appropriate boxes or space provided. Answers written outside the allocated space will NOT be graded. 4. The use of a molecular model kit is allowed. 5. Calculators may NOT be used. 6. The numbers in brackets indicate the marks assigned to each question or each part of a question. Chem 30C, Winter 2012, Second Midterm Examination (Practice Paper) Page 1 of 6 DO NOT TURN OVER UNTIL TOLD TO DO SO Question Topic Marks Max. 1 Mechanisms 1 19 2 Mechanisms 2 17 3 Amines 24 4 Reactions 20 5 Synthesis 20 Total 100 Question 1: Mechanisms 1 [Total: 19] Upon treatment by KOH, the bicyclic compound 1a isomerizes to 1b through the monocyclic intermediate 1c , which is not isolated. O O KOH H 2 O O O 1b (C 11 H 14 O 2 ) 1a (C 11 H 14 O 2 ) 1c (C 11 H 16 O 3 ) monocyclic not isolated a) The isomerization involves a conjugate addition, a retro-aldol reaction and an aldol condensation. Draw a a) The isomerization involves a conjugate addition, a retro-aldol reaction and an aldol condensation....
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This note was uploaded on 03/01/2012 for the course CHE 1 taught by Professor Lamd during the Spring '10 term at MIT.
- Spring '10