Homework 7

Homework 7 - Due: Sunday, March 25, 2007 11:59 PM EDT...

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Due: Sunday, March 25, 2007 11:59 PM EDT Current Score: 82 out of 100 Question Score Submission Options Description Chapter 7 Stereochemistry 1. [Carey6 7.kas.10.] 5/5 points Last Response | Show Details All Responses Notes Indicate whether or not the following molecules are chiral. a) 3,3-dimethylheptane b) 2,3-dimethylheptane c) 2-methylheptane d) 3-methylheptane e) 4-methylheptane a) achiral [ achiral ] d) chiral [ chiral ] b) chiral [ chiral ] e) achiral [ achiral ] c) achiral [ achiral ] 2. [Carey6 7.kas.11.] 24/24 points Last Response | Show Details All Responses Notes Use the structures below to answer the following. (a) Select the isomeric relationship between: A & B constitutional isomers [ constitutional isomers ] A & C enantiomers [ enantiomers ] A & D conformational isomers [ conformational isomers ] A & E diastereomers [ diastereomers ] (b) Alcohol A is a secondary alcohol [ secondary alcohol ] . (c) The configuration of the carbon bonded to the OH group in alcohol D is R [ R ] . (d) The spatial relationship between the methyl carbon and the oxygen in structure B is anti [ anti ] . (e) The spatial relationship between the tertiary hydrogen and the hydrogen bonded to carbon-1 (the carbon to which the hydroxy group is attached) in structure B is gauche [ gauche ] . (f) In structure C, the methyl group occupies the equatorial [ equatorial ]
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position. (g) Structure E is a cis- [ cis- ] substituted ring. (h) The total number of carbons in structure A is 7 [7] (i) The total number of hydrogens in structure A is 14 [14] . 3. 20/20 points Last Response | Show Details All Responses Notes Consider the following pairs of structures. Identify the relationship between them ( enantiomers , diastereomers , constitutional isomers , or identical molecules .) ( We are not taking conformational isomers into consideration for most of these
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This note was uploaded on 03/19/2008 for the course CH 221 taught by Professor Melander during the Spring '07 term at N.C. State.

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Homework 7 - Due: Sunday, March 25, 2007 11:59 PM EDT...

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