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Why -OH group in phenol is ortho and par...

Why -OH group in phenol is ortho and para directing in nature ?

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In phenol , the electron pair on the oxygen atom is in ocnjugation with ring .As a result , the ortho and para positions are the point of high electron density as shown .

Therefore , electrophilic substitutions takes place at the ortho and para positions in the ring . In other words , phenol is ortho and para directing in nature
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