Chem 3590 prelim 3 09 answers - Please also write your name...

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Unformatted text preview: Please also write your name on the back of the last page. P z a a I a I 7 1 . 2. 3. 4. 5. 6. >>cHEMISTRY 3590 << >> PRELIM #3 << Thursday, November 12th, 2009 7:30 - 9:00 PM Please do not open this exam until you are told to do so. There are 7 pages to this examination, including the cover. Check to make sure you have them all. You may use the backs of pages for scratch work, but all answers must appear in the designated space for credit. t20 t16 t16 t20 t16 112 lweC: M i d d l e TOTAL 1. (20 points) (a) Indicate the rate law describing the reaction shown below. Page 2 oI 7 ( i v ) C H 3 C H 2 C H 2 C I cH3-Br . NP -9V= cH3N3 + erO C- " |o tcsn.tp,"l (b) Indicate which one of the following compounds (i) - (iv) would be the least reactive towards potassium tert-butoxide in fert-butvl alcohol. (i) 9H. cHfcH,cr (ii) Tn. cH{\cH,cr (iii) Tn. "n{-"n,.*,", /x H B (c) Indicate which one of the following nucleophiles (i) - (iv) would be the most reactive in an Sp2 reaction with CH3CH2CH2BT using ethanol as solvent. (i) rsoo (ii)Hoo (iii) cH3cH2oO (iv) cF3cH2oO (d) Indicate which one of the following nucleophiles (i) - (iv) would be the most reactive in an Sp2 reaction with CH.CH"OTs usino DMSO as solvent. A ( i ) B r " ( i i ) C l \ 7 A ( i i i ) F \ 7 ( i v ) l v (e) The substitution reaction of enantiomerically pure A shown below af{ords (S)-B with only 40% enantiomeric excess. Which of the solvents listed below would most effectivelv...
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This note was uploaded on 02/11/2010 for the course CHEM 3590 at Cornell University (Engineering School).

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Chem 3590 prelim 3 09 answers - Please also write your name...

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