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Rajiv Gandhi University of Health Sciences, Karnataka
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I Year Pharm-D Degree Examination – NOV 2017
PHARMACEUTICAL ORGANIC CHEMISTRY (RS2)
Q.P. CODE: 2877
Time: Three Hours
Max. Marks: 70 Marks
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Your answers should be specific to the questions asked
Draw neat, labeled diagrams wherever necessary
LONG ESSAYS (Answer any two) 2 x 10 = 20 Marks
- Explain the mechanism, orientation and reactivity for the addition of hydrogen halides to alkenes.
- Explain 1,2 and 1,4 additions in conjugated dienes with mechanism. Add a note on effect of temperature.
- Explain mechanism, kinetics and stereochemistry involved in the dehydrohalogenation of Alkyl halides by a base.
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SHORT ESSAYS (Answer any six) 6 x 5 = 30 Marks
- Define and classify free radicals. Describe orientation and stability of free radicals.
- Give any five methods of preparation of cycloalkanes.
- Discuss the mechanism, kinetics and stereochemistry of SN1 reaction.
- Describe nitration of benzene with mechanism.
- What is benzoin condensation? Discuss the mechanism.
- Discuss Cannizzaro reaction with mechanism.
- Explain side chain halogenations in Alkyl Benzene. Add a note on resonance in Benzyl Radical.
- Explain the stability in Conjugated Dienes.
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SHORT ANSWERS 10 x 2 = 20 Marks
- Write a short note on intermolecular forces.
- Explain Lewis theory of acids and bases.
- Write the structures of the following
- 1, 3- Pentadiene
- Ethyl acetate
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- Explain the conditions which favor elimination over substitution.
- Explain allylic rearrangement with example.
- Convert benzoic acid to methyl benzoate.
- Compare the basicity among ammonia, ethylamine, tertiarybutylamine. Give reason.
- How will you convert phenol to salicylic acid? Write reactions.
- Give one example of oxidation and reduction reaction.
- Give preparation and uses of aspirin.
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