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    CH105 - (O) - Tutorial3 (Q) PDF

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    Shivansh Singh
    This document provides a tutorial on organic chemistry concepts including identifying symmetry planes and centers of symmetry to determine if compounds are chiral or achiral. It also covers topics like meso stereoisomers, assigning substituent priority, assigning R/S configurations, drawing 3D representations of chiral molecules, identifying relationships between compounds, assigning configurations like for glycidol, and identifying symmetry elements to determine chirality. The tutorial poses multiple questions on these organic chemistry concepts to test understanding.

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    CH105 - (O) - Tutorial3 (Q) PDF

    Uploaded by

    Shivansh Singh
    28 views2 pages
    This document provides a tutorial on organic chemistry concepts including identifying symmetry planes and centers of symmetry to determine if compounds are chiral or achiral. It also covers topics like meso stereoisomers, assigning substituent priority, assigning R/S configurations, drawing 3D representations of chiral molecules, identifying relationships between compounds, assigning configurations like for glycidol, and identifying symmetry elements to determine chirality. The tutorial poses multiple questions on these organic chemistry concepts to test understanding.

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    CH105-(O)-Tutorial3 (Q).pdf

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    This document provides a tutorial on organic chemistry concepts including identifying symmetry planes and centers of symmetry to determine if compounds are chiral or achiral. It also covers topics like meso stereoisomers, assigning substituent priority, assigning R/S configurations, drawing 3D representations of chiral molecules, identifying relationships between compounds, assigning configurations like for glycidol, and identifying symmetry elements to determine chirality. The tutorial poses multiple questions on these organic chemistry concepts to test understanding.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    28 views2 pages

    CH105 - (O) - Tutorial3 (Q) PDF

    Uploaded by

    Shivansh Singh
    This document provides a tutorial on organic chemistry concepts including identifying symmetry planes and centers of symmetry to determine if compounds are chiral or achiral. It also covers topics like meso stereoisomers, assigning substituent priority, assigning R/S configurations, drawing 3D representations of chiral molecules, identifying relationships between compounds, assigning configurations like for glycidol, and identifying symmetry elements to determine chirality. The tutorial poses multiple questions on these organic chemistry concepts to test understanding.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    CH105: Organic Chemistry

    Tutorial-3

    1. Locate any plane of symmetry or center of symmetry in each one of the


    following. Which one is chiral and which one is achiral?

    a) (E) –1, 2 –Dichloroethene b) cis –1, 2 –dichlorocyclopropane


    c) (Z) –1, 2 –Dichloroethene d) trans –1, 2 –dichlorocyclopropane

    2. A meso stereoisomer is possible for one of the following. Which one?

    a) 2, 3–dibromopentane b) 2, 4 –dibromopentane
    c) 3 –bromo –2 –pentanol d) 4-bromo–2 –pentanol

    3. List the substituents in each of the following sets in order of priority from highest to
    lowest.

    a) -Cl, -OH, -SH, -H b) -CH3, -CH2Br, -CH2Cl, -CH2OH


    c) -H, -OH, -CHO, -CH3 d) -CH(CH3)2, -C(CH3)3, -H, -CH=CH2
    e) -H, -N(CH3)2, -OCH3, -CH3

    4. Assign absolute configurations as R or S and write the Fischer projection for each.

    5. Draw three – dimensional representations of,


    a) R enantiomer of b) S enantiomer of

    H3C Br
    O H3C F

    H F

    6. Determine the absolute configuration of the following chiral molecules

    7. Identify the relationship in each of the following pairs as constitutional isomers,


    diastereomers, enantiomers or identical.
    8. (a) Assign the configuration of glycidol (given below). (b) This optically pure
    enantiomer has [] = +12 (neat, without solvent). What would be the measured
    rotation of a sample of this compound if it is contaminated by its enantiomer such that
    25% of the sample is its enantiomer?

    CH2OH
    O H

    9. Identify all the symmetry elements and comment on whether the following molecules
    are chiral or not?

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