Practice Problem 1 Solution

There is nothing wrong with the starting material (CH3CH2Br) or the product of this reaction (CH3CH2MgBr). Nor is there anything wrong with using magnesium metal to form a Grignard. The only place where a mistake could have been made is in the choice of the solvent. The solvent that was used was ethanol (CH3CH2OH), whereas the usual solvent for a Grignard reagent is diethyl ether.

Ethanol is a protic solvent which would react instantaneously with the carbanion in a Grignard reagent--thereby destroying this reagent.


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