chem2302 old exam1 soln

chem2302 old exam1 soln - Name _Answer Key_ ID# _ Please...

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Name _____Answer Key____________________ ID# ___________________________________ Please check here if you do NOT wish to have your exam returned in class. Exams not returned in class can be picked up individually at my office during office hours (Kolthoff 455). Exam I Organic Chemistry 2302 Fall 2008 8 pages including Periodic Table and Spectroscopy Table Do not open the exam until you are asked to do so. Have your ID visible on the desk beside you. Place your last name on all subsequent pages in case pages get separated. You may NOT use calculators, models, or any notes for this exam. Raise your hand if you have a question and a TA or I will help you. Exam begins at 9:05 a.m. and ends at 9:55 a.m. When time is called by the TAs, all pens are to be down and no more written work done. TAs are authorized to deduct 5 points from the exam of any student that does NOT following these rules. Read all questions carefully and be sure to answer each individual question. Circle only ONE answer for multiple choices type problems for full credit. Good luck! 1) _________/ 20 pts 2) _________/ 24 pts 3) _________/ 21 pts 4) _________/ 16 pts 5) _________/ 8 pts 6) _________/ 11 pts Total _________/100 points
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Last Name ____________________________ Wissinger, Chemistry 2302, Fall 2008, Page 1 1. Draw structures to represent: 10 pts a. cyclopentene oxide b. meta -nitrotoluene c. 1,2-dimethoxyethane 14-31h O CH 3 NO 2 O O 3 OCH 2 2 OCH 3 p. 626 c. the s- cis conformation of the diene: d. the lowest unoccupied π MO (LUMO) of 1,3- butadiene in the ground state H 3 CO H 3 + + + + -- - - π 3 * 2. Consider the interesting 6 electron cycloaddition reaction below. N 2 O H 3 C + 2 2 heat N O H 3 C a. Add mechanism arrows to the structures above showing a concerted reaction (like the Diels-Alder reaction) where two new σ bonds are formed and a lone pair created (in contrast to a new π
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chem2302 old exam1 soln - Name _Answer Key_ ID# _ Please...

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