sp2011-quiz4key - CHEM 236 Spring 2011 Quiz 4 12:30 pm...

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Unformatted text preview: CHEM 236 Spring 2011 Quiz 4 12:30 pm NameK_e\I_— 1. (4pts) Which reaction below is faster? Why? TN MW molecu. (1A1 +€W.Mo( WQ3LWV 9‘)“; CU ius‘iom m Wis t-‘r V16 C‘o‘mep’r is (“Heal egrede \mr Wit/{WW \s JZMRV. TM muuwipi/iile é] WMCWpWIe mcwases‘ w QWM of a. prodMLhW YVID\CLYi'l"L/l\> 2. (3pts) Choose one question for credit. You may attempt the other question for extra credit. CIRCLE WHICH IS WHICH AT THE BOTOM OF THE BOX. Look at the board for a drawing of a sigma antibonding orbital, information which will help with this question. Hexaphenyl benzene is chiral. Explain. TM Hag-Jr w w-IHA UN WW7" Wis (“c/UAst W appewcfizol pmem'ql mag); +wa§f oviogwl- MAL 1W6“ Grilled C -L loamy /, causing 0t Pv’UINHO'I/or .Cmn Lamar SM" Credit Extra credit Use hyperconjucation to explain why the axial conformer is preferred. We: (“n/‘55 (Acosta pNWUtMWOL-1 ' “(*1 of MM qvxo mum, 9* . y | \O‘JVL 10W.” CH4 0% . I > omiw svflmls «Jul-mm WIN * " + SWWIEM - "rcam‘SWJ‘d‘W Q N K) _ (“‘5’ man ' 0W2» \s mm“ Q7. Mam é x) .equod’UI/WO (MO/WW OH Credit Extra credit 3. (3 pts) Give a mechanism for the following reaction. The asterisk indicates a 13C. We: NaCN Wow —.h * 'k 4. (10 pts) Identify the structure of compounds 1 and 2 according to their molecular formulas, 1H NMR, and IR spectra. Assign the 1H NMR signals. 1) chpBr 2)C5H120 F I) '““ 5 J lie/1' H q H "“ p. 1 O H ...
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sp2011-quiz4key - CHEM 236 Spring 2011 Quiz 4 12:30 pm...

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