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what is the method of preparation of salicylaldehyde?

what is the method of preparation of salicylaldehyde?

Grade:Upto college level

2 Answers

vikas askiitian expert
509 Points
13 years ago

there are two basic methods for preparation of salicyladehyde

 

1) reaction of phenol in presence of NaOH & CO2 ....

phenol + NaOH => phenoxide + CO2=> O Hydroxy benzoic acid

this product is now reduced in presence of LBAH or DBAH to get salisaldehyde ...

this is an important name reaction , KOLbes reaction ...

 

2)reaction of phenol in presence of strong base & carbon tetrachloride (CHCl3)

phenol + CHCl3 + NaOH => salisaldehyde...

this is also im name reaction called as reimer tiemer reaction...

 

approve my ans if u like it

Yashaswy Akella
15 Points
13 years ago

It can be prepared from phenol and chloroform by heating with sodium hydroxide or potassium hydroxide in a Reimer-Tiemann reaction:

Preparation of salicylaldehyde via the Reimer-Tiemann reaction

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