Which,if any,of the following pairs of reagen | vedclass

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(A) $2$-phenyl-$2$-butanol is a tertiary alcohol with the structure $CH_3-C(OH)(Ph)-CH_2CH_3$. It can be prepared by the nucleophilic addition of a Gr

Vedclass · Accepted Answer

$CH_3CH_2MgBr + Ph-C(=O)-CH_3$

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(A) $2$-phenyl-$2$-butanol is a tertiary alcohol with the structure $CH_3-C(OH)(Ph)-CH_2CH_3$. It can be prepared by the nucleophilic addition of a Grignard reagent to a ketone. The reaction of ethylmagnesium bromide $(CH_3CH_2MgBr)$ with acetophenone $(Ph-C(=O)-CH_3)$ followed by acidic hydrolysis yields $2$-phenyl-$2$-butanol. $CH_3CH_2MgBr + Ph-C(=O)-CH_3$ $\rightarrow Ph-C(OMgBr)(CH_3)CH_2CH_3$ $\xrightarrow{H_3O^+} Ph-C(OH)(CH_3)CH_2CH_3$.

Which,if any,of the following pairs of reagents could be used to prepare $2$-phenyl-$2$-butanol?

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