The product obtained `is//are`

Options

A. `o-` product
B. `m-` product
C. `o-`and `p-`products
D. o,m- and p-products

Answer

C

Explanation

When esters of phenol (phenyl esters) are heated with anhydrous aluminium chloride, the acyl group migrated from the phenolic oxygen to an ortho or para position of the ring, thus yielding a ketone.

This reaction, called the fries rearrangement, is often used instead of direct acylation. Generally low temperatures `(60^(@)Cor less)` favour the formation of the `p-`isomer whereas high temperatures (above `160^(@)C`) favour the `o-`isomer.
The `p-`isomer is kinetically controlled product while `o-`isomer is thermodynamically controlled produt.