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What is the final major product of Reimer-Tiemann reaction?

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in Chemistry – Class 12 by (188k points)
What is the final major product of Reimer-Tiemann reaction?

(a) Salicylic acid

(b) o-Salicylaldehyde

(c) m-Salicylaldehyde

(d) p-Salicylaldehyde

I got this question by my college professor while I was bunking the class.

Question is from Alcohols and Phenols in division Alcohols, Phenols and Ethers of Chemistry – Class 12

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Correct choice is (b) o-Salicylaldehyde

Easy explanation: Phenol is first treated with chloroform and NaOH to form an intermediate substituted benzal chloride (with-CHO group substituted at ortho position of aromatic ring). This is then hydrolysed in the presence of an alkali to form 2-Hydroxy benzaldehyde or o-Salicylaldehyde.

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