In the reaction RMgBr + HC(OEt)_3 xrightarrow | vedclass

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(A) The reaction of a Grignard reagent $(RMgBr)$ with triethyl orthoformate $(HC(OEt)_3)$ proceeds via a nucleophilic substitution mechanism.$1$. The

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$RCHO$

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(A) The reaction of a Grignard reagent $(RMgBr)$ with triethyl orthoformate $(HC(OEt)_3)$ proceeds via a nucleophilic substitution mechanism.$1$. The nucleophilic $R^-$ group from the Grignard reagent attacks the electrophilic carbon of the triethyl orthoformate,displacing one ethoxide group $(-OEt)$ to form an acetal intermediate,$RCH(OEt)_2$.$2$. Upon acidic hydrolysis $(H_3O^{+})$,the acetal intermediate undergoes hydrolysis to yield an aldehyde $(RCHO)$ as the final product $P$.

In the reaction $RMgBr + HC(OEt)_3 \xrightarrow{Ether, H_3O^{+}} P$,the product $P$ is

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