Download RGUHS M.Pharm 2010 Oct 2010 Oct 7924 Advanced Pharmaceutical Chemistry Revised Scheme Question Paper

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Draw neat labeled diagrams wherever necessary. Answer FOUR questions

ANSWER ANY FOUR 4 X 25 = 100 Marks

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1. 1. Discuss with examples, the formation and stabilities of carbocations and write the influence of substituents on their stabilities
   2. How do you say that carboxylic acids are more acidic than phenols based on resonance
2. 1. Give an account of the methods of determination of reaction mechanisms
   2. Discuss the mechanism and applications of pinacol pinacolone rearrangement

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3. Write short notes on:

   1. Beckmann rearrangement
   2. Benzilic acid rearrangement
   3. Schmidt reaction

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   4. Benzoin condensation
4. 1. Explain with a suitable example the salient features of a substitution
   2. Discuss the steriochemical evidence in favour of this reaction
   3. How can you say that S_N1 reactions proceeds with inversion and racemization in which inversion exceeds

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5. Give an account of

   1. Aromatic nucleophilic substitution
   2. Friedel — Crafts alkylation and acylation
   3. Cannizzaro reaction

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   4. Favorskii rearrangement

6. Write briefly on:

   1. R and S configuration
   2. Heterogeneous catalysis

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   3. Diels - Alder reaction
   4. Sigmatropic rearrangement

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