The structure and the stereochemistry of the principalproduct formed at pH 9 .5 areto be determined. The structure of the isomer that predominately forms at pH 4 .2 is to be identified. Concept Introduction: > In comparison to simple ethers, epoxides show higher reactivity towards nucleophilic reagents. > On reacting with anionic nucleophiles, epoxides form ring-opened products. This reaction is quite rapid and is exothermic in nature. > The high reactivity of epoxides towards anionic nucleophiles is due to the presence of angle strain in epoxide and this is relieved by opening of the ring.

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Chapter 17.12, Problem 15P

Interpretation Introduction

Interpretation:

The structure and the stereochemistry of the principalproduct formed at pH 9.5 areto be determined. The structure of the isomer that predominately forms at pH 4.2 is to be identified.

Concept Introduction:
>
In comparison to simple ethers, epoxides show higher reactivity towards nucleophilic reagents.
>
On reacting with anionic nucleophiles, epoxides form ring-opened products. This reaction is quite rapid and is exothermic in nature.
>
The high reactivity of epoxides towards anionic nucleophiles is due to the presence of angle strain in epoxide and this is relieved by opening of the ring.

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