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| Roll No. | Total No. of Pages : 02 | Total No. of Questions : 13 |
B.Pharma (2017 Batch) (Sem.-4)
PHARMACEUTICAL ORGANIC CHEMISTRY-III
Subject Code : BP-401T
Paper ID: [75843]
Time: 3 Hrs. Max. Marks: 75
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INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains THREE questions carrying TEN marks each and student has to attempt any TWO questions.
- SECTION-C contains NINE questions carrying FIVE marks each and student has to attempt any SEVEN questions.
SECTION-A
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- Write short notes on :
- Give the name and structures of all the possible conformations for propyl chloride.
- Name and structure of thiophene ring
- Explain the basicity of pyrrole
- Write down the structure and names of all the azoles.
- Why Oxazole does not undergo nitration or sulfonation?
- Difference between D and L.
- Define and give example of enantiomers.
- Geometrical isomers.
- Meso compounds.
- Imidazole has boiling point of 256° whereas 1-methyl imidazole has boiling point 198° why?
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SECTION-B
- Give detailed account of stereospecific reactions.
- Explain :
- Oppenauer oxidation.
- Clemmensen reduction.
- Mechanism and synthetic application of Beckmann rearrangement.
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SECTION-C
- Give the name and structures of all the possible Newmann projections for n-butane. Arrange them in increasing stability order with suitable justifications.
- Draw the stereochemical formulas for all the possible stereoisomer of the 2,3 dichlorobutane. Label pairs of enantiomers, diastereomers and meso compounds.
- Write down the mechanism for synthesis of quinoline by Skraups method.
- Bayer's strain theory.
- Explain the techniques used to prepare chiral drugs.
- Short note on asymmetric synthesis.
- Nucleophilic substitution reactions of pyridine.
- Two methods for preparation of Isoquinoline.
- Schmidt rearrangement.
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NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any paper of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Pharma 4th Semester Last 10 Years 2011-2021 Previous Question Papers|| Punjab Technical University