Addition of alcohols to aldehydes in the pres | vedclass

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(D) Aldehydes react with one equivalent of a monohydric alcohol in the presence of dry $HCl$ gas to yield alkoxyalcohol intermediate,known as a hemiac

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Acetals

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(D) Aldehydes react with one equivalent of a monohydric alcohol in the presence of dry $HCl$ gas to yield alkoxyalcohol intermediate,known as a hemiacetal.Further reaction with another molecule of alcohol in the presence of dry $HCl$ gives a gem-dialkoxy compound,which is known as an acetal.The general reaction is:$R-CHO + R'OH \xrightarrow{dry \ HCl} R-CH(OH)(OR')$ (Hemiacetal)$R-CH(OH)(OR') + R'OH \xrightarrow{dry \ HCl} R-CH(OR')_2 + H_2O$ (Acetal)Therefore,the correct option is $(D)$.

Addition of alcohols to aldehydes in the presence of anhydrous acids yields:

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