Midterm #2 - Name Signature PRINT YOUR NAME CLEARLY Chem 3B...

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Name: _____________________________________________ SID: _______________________________ Signature: __________________________________________ 3BL GSI Name: ______________________ Lecture Only: ________________________ Completing an I Grade: ________________ Chem 3B Su07 Midterm 2 06AUG07 Neil O.L. Viernes This exam has 12 pages; make sure you have them all. The last page is blank. Use as scratch paper, anything written on it will NOT be graded. Please place answers in designated spaces. Please write clearly. Messy or ambiguous answers will not be graded. This exam runs 115 minutes. No clarifying questions will be answered by the GSI’s after the exam begins. Do not write in this box 1) ________________________ (16) 2) ________________________ (10) 3) ________________________ (11) 4) ________________________ (12) 5) ________________________ (16) 6) ________________________ (30) 7) ________________________ (15) 8) ________________________ (16) 9) ________________________ (24) 10) _______________________ (10) Total ____________________ (160) PRINT YOUR NAME CLEARLY!! © 2007 N.O.L. Viernes, Berkeley, all rights reserved
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2 1) (16 pts) Provide nomenclature or structures for the following: N H NO 2 N H O Br 2,4,6-Trinitrotoluene (TNT) Styrene
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3 2) (10 pts) Predict the products for the following electrocyclic ring opening reactions. Δ h ν How would you prepare the molecules A, B and C from A B C
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4 3) (11 pts) Draw the HOMO (Diene) – LUMO (Dienophile) molecular orbital interaction for the Diels-Alder reaction of Determine if the following molecules are anti-aromatic or aromatic.
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