Phenol condenses with phthalic anhydride in t | vedclass

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Question

(B) When phenol reacts with phthalic anhydride in the presence of concentrated $H_2SO_4$ (acting as a dehydrating agent),a condensation reaction occur

Vedclass · Accepted Answer

phenolphthalein

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(B) When phenol reacts with phthalic anhydride in the presence of concentrated $H_2SO_4$ (acting as a dehydrating agent),a condensation reaction occurs. Two molecules of phenol condense with one molecule of phthalic anhydride to produce phenolphthalein and water. The reaction is: $2C_6H_5OH + C_8H_4O_3 \xrightarrow{conc. H_2SO_4, \Delta} C_{20}H_{14}O_4 (	ext{phenolphthalein}) + H_2O$.

Phenol condenses with phthalic anhydride in the presence of conc. $H_2SO_4$ to form:

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