Download GTU B.Pharma 2020 Winter 4th Sem BP401TT Pharmaceutical Organic Chemistry Iii Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

B.PHARM - SEMESTER- IV EXAMINATION — WINTER -2020

Subject Code: BP401TT Date: 09/02/2021

Subject Name: PHARMACEUTICAL ORGANIC CHEMISTRY III

Time: 02:30PM TO 04:30PM Total Marks: 54

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Instructions:

1. Attempt any THREE questions from Q-1 to Q-6.
2. Q.7 is compulsory to attempt.
3. Make suitable assumptions wherever necessary.
4. Figures to the right indicate full marks.

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Q.1

1. State and explain Racemic mixture and write note on different methods of resolution. 06
2. Give the Preparation, Properties and Chemical reaction of Pyrrole. 05
3. Give Difference between Enantiomers and Diastereomers. 05

Q.2

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1. Give brief note on Conformation of Cyclohexane. 06
2. State and Explain 05
   1. Enantiomers
   2. Diastereomers
   3. Specific rotation
   4. Mesomers

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   5. Geometric Isomer
3. Write short note on preparation and chemical properties of Thiazole. 05

Q.3

1. Give Brief note with mechanism on 06
   1. Dakin Reaction

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   2. Schmidt rearrangement
2. Comment on following statements 05
   1. Furan has high boiling point than Pyrrole.
   2. Furan is aromatic in nature although it containing two lone pair electron.
   3. Thiophene is more aromatic than pyrrole.

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   4. Electrophilic substitution on pyridine favour at C3 position.
   5. Pyrrole is more basic than pyridine and aliphatic amine.
3. Write a Short-Note on Geometric Isomerism. 05

Q.4

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1. Write the Structure, Reaction, and Medicinal use of Imidazole, Oxazole. 06
2. Give any three preparation of i) Indole ii) Quinoline 05
3. Give Structure of following ring system 05
   1. Pyrimidine
   2. Isoquinoline
   3. Purine

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   4. Acridine
   5. Thiazole

Q.5

1. Give Brief note with Mechanism on 06
   1. Clemmensen Reduction

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   2. Beckmanns rearrangement
2. Complete the reaction 05

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