Phthalic acid reacts with resorcinol in the presence of concentrated H2SO4 to give :
Phenolphthalein
Alizarin
Coumarin
Fluorescein
As we learned
Phthalein Reaction -
Product form is phenolphthalein.
- wherein
Phthalic acid produces phthalic anhydride in presence of H2SO4
Option 1)
Phenolphthalein
Option 2)
Alizarin
Option 3)
Coumarin
Option 4)
Fluorescein
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