Practice Problem 2.1
Propose structures for two constitutional isomers of cyclopentene that do not contain a ring.
Interpretation:
The structuresfor two constitutional isomers of cyclopentene, which do not contain a ring, are to be proposed.
Concept introduction:
When two molecules have the same molecular formula, they are called isomers. If the connectivity of atoms is different, they are called constitutional isomers.
Constitutional isomers are the isomers in which the molecular formula remains the same but the arrangement of groups or atoms are different in structure.
In order to estimate the number of constitutional isomers of a particular compound, count the number of each atom and arranged all the atoms in different ways.
Answer to Problem 1PP
Solution:
Given: The structure of cyclopentene is as follows:
Explanation of Solution
The structure of cyclopentane contains 5 carbon atoms and 8 hydrogen atoms. Thus, the molecular formula of cyclopenteneis
The molecular formula is
Hence, the two constitutional isomers of
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