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(B) The reaction is a Claisen rearrangement,which involves the thermal [$3$,$3$]-sigmatropic rearrangement of an allyl aryl ether to an ortho-allyl ph

Vedclass · Accepted Answer

$2-$($1$-phenylprop$-2-$en$-1-$yl)phenol

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(B) The reaction is a Claisen rearrangement,which involves the thermal [$3$,$3$]-sigmatropic rearrangement of an allyl aryl ether to an ortho-allyl phenol. In the given reactant,the allyl group is $CH_2-CH=CH-C_6H_5$. During the [$3$,$3$]-sigmatropic shift,the bond between the oxygen and the $CH_2$ group breaks,and a new bond forms between the ortho-carbon of the phenol ring and the gamma-carbon of the allyl group. This results in the inversion of the allyl group,attaching the $CH(C_6H_5)CH=CH_2$ moiety to the ortho position of the phenol ring. Therefore,the product is $2-$($1$-phenylprop$-2-$en$-1-$yl)phenol.

What is the product obtained by heating the following allylic ether of phenol?

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