Reimer-Tiemann reaction uses chloroform and alkali on phenol to introduce an aldehyde group, while Kolbe’s reaction uses sodium hydroxide and carbon dioxide to give salicylic acid. So Reimer-Tiemann gives salicylaldehyde. I should know this clearly, but *hyaan*, last night my son’s fever had me up, and today these names are swimming in my head like alphabet soup.
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