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  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    1

    Model Answer

    For

    M. Sc. (Chemistry) (Second Semester) Examination, 2013

    CHEMISTRY

    (ORGANIC CHEMISTRY II)

    AR-7129

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    2

    Section A

    (Short Answer Type Questions)

    1. (i) Prove that the C-C single bond can participate in NGP.

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    3

    1. (ii) 4-Chloro-1-butanol reacts with PhSH 5700 times faster than 3-chloro-1-butanol;

    Explain with mechanism.

    1. (iv) Complete the reactions:

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    4

    1. (iii) Presence of OMe group activate benzene rings towards electrophilic substitution reaction but

    deactivate benzene reaction for nucleophiles. On the other hand, -NO2 acts in opposite direction.

    Explain.

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    5

    1. (v)

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    6

    1. (vii)

    1. (ix) Give probable mechanism for the following photochemical reaction

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    7

    1. (x) Suggest mechanism for the following photo reaction

    1. (vii) General mechanism and Energy profile diagram of Friedel-Craft reaction.

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    8

    Section A

    (Short Answer Type Questions)

    2. (a) Write the general mechanism, evidences and effect of substituents on SNAr2

    reaction.

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    9

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    10

    2. (b) Discuss the NGP by sigma and Pi-bond

    Discuss details with suitable examples.

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    11

    3 (a) Friedel-Craft reaction:

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    12

    3 (b) von-Ritcher Reaction

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    13

    Q. 4 (a)

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    14

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    15

    5. (i)

    5. (ii)

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    16

    5 (iii)

    6 (a)

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    17

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    18

    7 (a)

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    19

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    20

    8. (a)

    8. (b)

  • Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013

    Organic Chemistry II (CMT 203)

    21