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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Chapter 7.1, Problem 2P

Interpretation Introduction

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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