Mechanism of kolbes reaction

Asked by Shanmukhasantoshreddykallam | 8th Jan, 2019, 07:54: AM

Expert Answer:

(i) Kolbe's reaction:

In this reaction, phenol is reacted with sodium hydroxide to form sodium phenoxide. Sodium phenoxide formed reacts with carbon dioxide to form ortho-hydroxybenzoic acid or salicylic acid as the main product.

 

The mechanism for Kolbe's reaction is as follows:

From the above mechanism, the negative charge gets developed on the ortho position. Hence the electrophilic substitution takes place at ortho position and ortho-hydroxybenzoic acid is formed as the product.

Answered by Ramandeep | 8th Jan, 2019, 10:43: AM

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