Esterification (shown below) is a reaction co | vedclass

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(D) The esterification reaction involves the nucleophilic attack of methanol on the carbonyl carbon of the carboxylic acid group. This process does no

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Optical rotation is not directly related to absolute configuration,so the change in sign of rotation is merely a coincidence

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(D) The esterification reaction involves the nucleophilic attack of methanol on the carbonyl carbon of the carboxylic acid group. This process does not involve the chiral center (the carbon atom attached to the $-OH$ group). Since the chiral center remains unaffected,the absolute configuration ($R$ or $S$) of the molecule does not change. Optical rotation is a physical property that depends on the specific structure and environment of the molecule. There is no direct,simple correlation between the absolute configuration and the sign of optical rotation ($+$ or $-$). Therefore,the change in the sign of optical rotation from $(-)$ to $(+)$ is merely a coincidence resulting from the change in the functional group attached to the molecule.

Esterification (shown below) is a reaction converting a carboxylic acid to its ester. It involves only the carbonyl carbon. Esterification of $(-)$ lactic acid with methanol yields $(+)$ methyl lactate. Assuming that there are no side reactions,what is true about this reaction?

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