Rajiv Gandhi University of Health Sciences
First Semester Degree Examination
[Time: 3 Hours] [Max. Marks: 75]
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Advanced Organic Chemistry -I
Q.P. CODE: 5118
Your answers should be specific to the questions asked.
Draw neat, labeled diagrams wherever necessary.
LONG ESSAY (Answer any Three) 3 X 10 = 30 Marks
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- Define and classify Carbocations. Write short note on structure and reactions of carbocations.
- Explain the mechanism involved in Vilsmeir-Haack and Michael addition reaction.
- Explain any two methods for synthesis of Quinoline and imidazole.
- Explain basic principle and advantages of retro-synthesis. Explain the methods followed to disconnect a carbon-halogen bond.
SHORT ESSAY (Answer any Nine) 9 X 5 = 45 Marks
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- Explain mechanism of SN1 with suitable example.
- Explain rearrangement of carbocations with suitable example.
- Define and explain Ullmann coupling reactions.
- Explain Mannich reaction with one example.
- Explain synthetic applications of Aluminium isopropoxide and diazopropane.
- Write short note on brominating agents used in organic synthesis with their application.
- Explain the role of triphenyphosphine in Wittig reaction.
- Explain the synthesis and uses of 5-F-Uracil.
- Write the structure and uses for any five imidazole containing drugs.
- Explain stereochemical and topological stratagies adopted in retrosynthesis.
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