Effect of Clemmensen reduction on carboxylic acids

Does the Clemmensen reduction have any effect on the carboxyl group $\ce{-COOH}$ if it is attached to some organic compound? If yes, what does it get reduced to?




I don't think so that there would be removal of carbonyl group because the -cooh group would be in resonance and also clemmensen reduction is preffered for aldehydes and ketones to remove oxygen .
More help would be afyer understanding its mechanism here[Mechanism of clemmensen reduction](http://www.organic-chemistry.org/namedreactions/clemmensen-reduction.shtm)


Also the zinc(amphoteric) might react with the acid giving salt.


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