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How can explain resorcinol (1,3-Dihydroxybenzene) give positive Iodoform test?


Resorcinol (1,3-Dihydroxybenzene) give positive iodoform test because it is in equilibrium with its tautomer cyclohex-2-en-1,5-dione. It give 3, 5-dioxohexanoic acid (CH3-CO-CH=CH-CH2-COOH) on reaction  with strong base (OH-) (I2+NaOH Iodoform reagent) ,which has a CH3-CO (acetyl) group, so it’ clear that it would be give positive iodoform test.

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