Download JNTUK B.Pharm 1-2 2013 Nov B1206 Pharm Organic Chemistry II Question Paper

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Code No: B1206/R10

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R10

I B.Pharmacy II Semester Regular Examinations, Oct/Nov_2013

PHARM ORGANIC CHEMISTRY -II

Time: 3 hours

Max Marks: 75

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Answer any FIVE Questions

All Questions carry equal marks

1. (a) Describe oxidation and dehydration of alcohols [8+7]
   (b) Distinguish test for 1º, 2º, and 3° alcohols.
2. Compare the resemblance and difference properties of phenols with those of alcohols. [15]

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3. (a) Explain the claisen rearrangement for the preparation of phenols. [8+7]
   (b) Write a short note on stability of phenoxide ion.
4. Write the important methods of preparation of aldehydes and ketones. [15]
5. (a) Write the reduction reactions of acetaldehyde. [5+10]
   (b) Write the mechanism of the following
   

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   (i) Clemmensen reduction with suitable examples
   (ii) Witting reactions.
6. (a) Write the hydrolysis, reduction reactions of esters. [8+7]
   (b) Write an account of malonic and etoacetic esters, their importance in synthesis.
7. (a) Discuss the basicity of amines. Explain why aliphatic-amines are stronger bases than ammonia. [8+7]
   

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   (b) Discuss the Hinsberg method of separation of mixture of amines.
8. (a) Define Isonitriles. Write any two important methods of preparation of Isonitriles. [8+7]
   (b) Distinguish Nitriles from Isonitriles. Discuss the various functional reactions of Isonitriles.

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