Prelim1_Solutions - E CHEM 3570 - Midterm | — September...

Info iconThis preview shows pages 1–6. 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
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: E CHEM 3570 - Midterm | — September 25th 2008 NAME: mum Kev”! Question 1 (20 points): Question 2 (10 points): Question 3 (20 points): Question 4 (10 points): Question 5 (10 points): Question 6 (15 points): Question 7 ( 8 points): Question 8 ( 7 goints): TOTAL (100 points): Best of Luck @ (Make sure to follow exam instructions precisely) Question 1: This question is focused on 1-chloro-3,5-diethyl cyclohexane a) How many stereoisomers does it have? I 1PM D) Clearly draw the ideal conformational cyclohexane chair form of the most stable stereoisomer (you can pick either enantiomer) in the box below. (in 1+ A“ arm/Pr 5‘ Mould :1 wag be QkaML—Q a: \ (h [7357 c) Assign all stereocenters of the stereoisomer you have drawn in part b) as (R) or (8). See, Structure AfifinW' d) Does 1—chloro—3,5—diethyl cyclohexane have any MESO structures? Draw these structures in the box below or if it does not, write NONE. Question 2: Draw the most Stable conformation of the structure shown Question 3: Provide IUPAC Names for the following three compounds - r J 42369419 CI Cl \ 1311. - Br Br doocm 8P3 him LEE} 'dEUw - ‘C (Joke +W Question 4: Circle the most acidic hydrogen atom in each box (a-d). . H / i iiH HY i i i i H _ 9 ______ _ ____________ t . Questiol: !learly draw (in e two boxes pro stable) and worst (least stable) Newman projections of the compound shown. Your projections should look down the circled C-C bond. N .' H \ Nu; thug s ML>N 142} F O 6-” W3 '6 l ‘4 DiastWvM-M/ surf F 5+3 Highest EnergyTEfiTUrmati onal lsomer Question 6: Draw all resonance forms of the structure pairs shown. You need to show how the eflow to form each resonance structure using the appropriate arrow. he more stable of each structure pair provided. i (gut-emf»? Question 7: Are the following structures chiral???? Answer by circling YES or NO. H Yes or Yes r No 0 Yes orlNo gYesior No Question 8: Can the following structures exist?? Answer b circling YES or NO. I l n+- Mel ...
View Full Document

Page1 / 6

Prelim1_Solutions - E CHEM 3570 - Midterm | — September...

This preview shows document pages 1 - 6. Sign up to view the full document.

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