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CHEM219 / CHEM 219 Module 7:
( Update 2025 / 2026) Principles of Organic Chemistry with Lab Questions & Answers - Portage Learning
Question:
T/F Non-aromatic heterocyclic compounds have chemical behavior that is very different from their acyclic counterparts
Answer:
False
Question:
Explain the difference between nitrogen heterocycles where one molecule has a C=N bond but the other has only C-N bonds.
Answer:
When one molecule of a nitrogen heterocycles has a pi bond they act as if they are pyridine. When nitrogen heterocycles interact with C-N bonds they act as if they are pyrrole.
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Question:
Which is more basic in a heterocyclic compound, a "pyridine-like" nitrogen or a "pyrrole-like" nitrogen?
Answer:
Pyridine like is more basic since the lone pair of nitrogen isn't involved in delocalization inside the ring.
Question:
Identify each of the following 5 membered aromatic hereocyclic compounds
Answer:
- Furan
- Pyrrole
- Thiophene
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