Podcast
Questions and Answers
Which type of substitution reactions do furan, thiophene, and pyrrole undergo?
Which type of substitution reactions do furan, thiophene, and pyrrole undergo?
Which of the following is a basic property of pyrrole?
Which of the following is a basic property of pyrrole?
Which statement about the aromatic character of these five-membered heterocycles is correct?
Which statement about the aromatic character of these five-membered heterocycles is correct?
Which atom in furan and thiophene is sp2 hybridized?
Which atom in furan and thiophene is sp2 hybridized?
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What is the color of the polymeric product known as pyrrole red?
What is the color of the polymeric product known as pyrrole red?
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Polymeric product known as pyrrole red is formed in __________ solutions
Polymeric product known as pyrrole red is formed in __________ solutions
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Pyrrole has a weak __________ property
Pyrrole has a weak __________ property
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Furan, thiophene and pyrrole undergo electrophilic substitution at the 𝛼- (2- ) __________
Furan, thiophene and pyrrole undergo electrophilic substitution at the 𝛼- (2- ) __________
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The oxygen atom in furan and the sulphur atom in thiophene are __________ hybridized
The oxygen atom in furan and the sulphur atom in thiophene are __________ hybridized
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Pyrrole in dilute acids forms a trimer and in concentrated solutions it polymerizes to a dark colored polymeric product known as __________
Pyrrole in dilute acids forms a trimer and in concentrated solutions it polymerizes to a dark colored polymeric product known as __________
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Study Notes
Heterocycles: Furan, Thiophene, and Pyrrole
- Furan, thiophene, and pyrrole undergo electrophilic substitution reactions.
- Pyrrole has a basic property, which is being weakly basic.
Aromatic Character
- The correct statement about the aromatic character of these five-membered heterocycles is that they exhibit aromatic character.
Hybridization
- In furan and thiophene, the oxygen and sulfur atoms, respectively, are sp2 hybridized.
Pyrrole Red
- Pyrrole red is a dark-colored polymeric product formed in acidic solutions.
- Pyrrole has a weak acidic property.
Substitution Reactions
- Furan, thiophene, and pyrrole undergo electrophilic substitution at the 𝛼- (2-) position.
Acidic Reactions
- Pyrrole in dilute acids forms a trimer and in concentrated solutions, it polymerizes to form pyrrole red.
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Description
Test your knowledge of pharmaceutical organic chemistry with a focus on heterocyclic chemistry. This quiz covers topics relevant to clinical PharmD students at a level 2 proficiency.
