QJEEM19Ch34b3: JEE Main 2019 Chemistry - Class 12 JEEM19Ch34b3 Solution: The aldehydes which will not form Grignard product with one…

Grignard product is that product which forms because of nucleophilic addition reaction.

Aldehydes on reaction with Grignard reagent gives Grignard product.



In Grignard reagent R^$$-$$ is a very strong base, so it will react with acidic H⁺ of $$-$$COOH group first. As Grignard reagent is one equivalent, so no reagent will remain to react with aldehyde group.



Here also in alcohol functional group ($$-$$CH₂OH)  H⁺ is acidic so here acid base reaction will occur.

In option (A) only one functional group ($$-$$ CHO) present so it will give Grignard product by nucleofilic addition reaction.

In option (C) functional group ether ($$-$$ CH₃) does not react with RMgX so aldehyde functional group will react with RMgX and give Grignard product.