W08 midterm2 key

W08 midterm2 key - Chem 30C, Winter 2008 2nd Midterm Exam...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chem 30C, Winter 2008 2nd Midterm Exam Prof. Ohyun Kwon, UCLA I. -_ .II-Ifij -\_!_ Your Name (l'lease Print) Question Your Points 1 (16 points) 2 (18 points) 3 (15 points) 4 (19 points) 5 (14 points) 6 (18-points) Total (100 points) Chem 30C 2“‘1 Midterm, Page 1 1. (a) (8 points) Draw four nitration product in the order wf fikelihnml (from top to bottom) and name each product. first may): pmduct .- L“: " .5; .' nr‘w 3a n-Hrt m r. en. 1 second rrlagur product third major product fourth major product (b) (8 points) Name the following molecules or draw a structure of each compound. _ _ _ _. purlne l A _ ii ~- 9-; ' "‘ pyrimidine a "i “DH Chem 30C 2“d Midterm, Page 2 2. (18 points) Give the number of pi electrons and determine whether each of the following compounds is aromatic, anti-aromatic, or non-aromatic. compound number of .1 ClLfiE'II': 1n~ aromat1c1ty E 1:] "..‘ ‘ . .g..'1 . '.. t~.‘\..\ .1 ‘ EB— , » r ;‘ 0;“ \N l ii N | I / .- . _. I ’I f"- ‘L? III Chem 30C 2"" Midterm, Page 3 3. (15 points) Predict products for each electrophilic aromatic substitution. (a) I]. ‘ NMe2 T’I‘“ “-": H2804 i (b) Br2 S FeBr3 Chem 30C 2nd Midterm, Page 4 4. (a) (9 points) Which of the following is a stronger acid? Explain why. H H .I’ . I cyclopentadtey cycloheplalriene \_____,_.,-/' SQ; —9"% Ge b'fi Mom —9 mourn —) smug #1111714; fP\ , Dig/i, :B :3 Ge <3 Tl clams -—§ Ckfihfikmmh‘t-Ji [£135be W3 ‘1, H Ui— flashed) : m4” #9 be nonuramhl owl no emu Skubilfmw, (b) (10 points) Draw the relative energies for the molecular orbitals (MO energy diagrams) of the cyclooctatetraenyl dianion below. Indicate in which MO’s the electrons are located and predict the stability of this species in a very short sentence. cyclt‘nnclatetrae nyl dianion “1 —~ M. if elm be Milli/“$5116 oml Wimbonclin} om oml pawl W‘s “‘ Ten, TE mm Timur ‘3 filo/«am 3,: Iii-3a "' unmmllj smile 1 g»! Lhem 30C 2“d Mldteun, Page 5 S. (14 points) Draw the structures of the expected products. (a) 7 (2 CI? HNOa AcCI FGCI3 H2804 (b) KOH EtOH H2804 H20 PCC CHzClz Chem 30C 2"‘1 Midterm, Page 6 6. (18 points) Using benzene as the only aromatic starting material, show how to synthesize the following compounds. Use any other necessary organic or inorganic chemicals. J . - #7 goal I i r . f fa, ‘ I a New “a m «Nam; H10 , l _ A I {\I- ~ r M f O 4’54; “‘* .,- I HLU LL'L l H'MHLk. husk imam! CI r i ' “‘1- WHO ~ m . . «W M: T,- .. j _ ~73 II L. 1 —%fi -—— _— — — H IriLfi) ru- iL Rad/WU a: a. L‘“./ [)1 G‘y ...
View Full Document

This test prep was uploaded on 04/06/2008 for the course CHEM 30C taught by Professor Kwon during the Winter '08 term at UCLA.

Page1 / 7

W08 midterm2 key - Chem 30C, Winter 2008 2nd Midterm Exam...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online