Medicinal Chemistry PYQs – Set 51
Subject : Medicinal Chemistry
1001. What is the major organic product which results when cycloheptene is irradiated in the presence of N-bromosuccinimide?
Medicinal Chemistry • • NIPER 2013
1002. The terpene shown below is formed by isoprene units. At the wavy line, the isoprene units are joined in which fashion?
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1003. What are the absolute configurations of the chiral carbons in the given compound?
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1004. What is the major product formed when anisole is treated with isobutyl chloride and aluminum chloride?
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1005. Which reagent gives a non-stereospecific reaction with alkenes?
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1006. Which of the following correctly lists the compounds in order of decreasing acidity?
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1007. The hydroboration-oxidation reaction can be characterized as the ______ addition of water to an alkene:
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1008. Which of the following is a better nucleophile?
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1009. The above reaction is known as:
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1010. Which structures are aromatic?
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1011. Name the reaction used to convert carbonyl compound to alkene.
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1012. Which of the following reactions of alkenes is not stereospecific?
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1013. Protection–deprotection and coupling between two amino acids components are important steps in peptide synthesis. One of the following is NOT used as a protecting group in the peptide synthesis.
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1014. Why is penicillin G sensitive to acid and enzyme-catalyzed hydrolysis?
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1015. Match the reactions with their names. 1. Claisen rearrangement, 2. Ullman reaction, 3. Baeyer-Villiger oxidation, 4. Pechmann Condensation
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1016. Cyclopentadiene is unusually acidic for a hydrocarbon. Why?
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1017. Which of the following concepts explains why tertiary carbocations are more stable than primary and secondary carbocations?
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1018. Arrange the compounds in order of increasing reactivity toward electrophilic aromatic substitution (lowest first).
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1019. A thermodynamically-controlled reaction will yield predominantly:
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1020. With respect to electrophilic aromatic substitution, a chlorosubstituent is:
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