Reimer–Tiemann reaction

 Reimer–Tiemann reaction 

The Reimer-Tiemann reaction is a chemical reaction used for the ortho-formylation of phenols, with the simplest example being the conversion of phenol to salicylaldehyde.

When phenols i.e. C6H5OH is treated with CHCl3 (chloroform) in the presence of NaOH (sodium hydroxide), an aldehyde group (-CHO) is introduced at the ortho position of the benzene ring leading to the formation of o-hydroxybenzaldehyde. The reaction is popularly known as the Reimer Tiemann reaction.

Reaction Mechanisms

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