Interpretation:
The structural formulas and IUPAC names of all monochloro-substituted derivatives, including enantiomers, of cyclopentene, are to be written. The R- and S-configurations are to be assigned to enantiomers. The allylic and vinylic derivatives among these are to be determined.
Concept Introduction:
>The name of a cycloalkane is derived from the name of the corresponding cycloalkane by replacing the ending –-ane by –-ene.
>The substituents are listed in alphabetical order.
>If a chiral center is present, the absolute configuration is specified at the start, in parenthesis, along with the position of the center.
>The position of the carbon bonded to the doubly bonded carbon is called the allylic position.
>The position of a substituent on a doubly bonded carbon is the vinylic position.
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