Answer :

Final answer:

If hydrolysis is not avoided in a Grignard reagent, the organomagnesium compound will react with water, resulting in the formation of an alkane and magnesium salts. This conversion undermines the intended synthesis that Grignard reagents are typically employed for, such as carbonyl additions.

Explanation:

When a Grignard reagent is exposed to water or a protic solvent, hydrolysis occurs, destroying the Grignard reagent to form an alkane. This is because the Grignard reagent is highly reactive towards water, which provides a source of H+ ions.

In practice, if a Grignard reagent encounters water, the organomagnesium halide undergoes protonation, leading to the formation of the corresponding hydrocarbon, and the release of magnesium salts.

For example, if methylmagnesium bromide (CH3MgBr) is exposed to water, it will rapidly convert to methane (CH4) and a magnesium bromide compound. Similarly, if a Grignard reagent is intended to react with an ester but instead encounters water, the expected carbonyl addition reaction will not take place.

This emphasizes the need for anhydrous or inert conditions when working with Grignard reagents to achieve the desired synthesis outcome.

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