Compound X, is: (a) (b) (c)

Friedel craft’s reactions are generally used to attach substituents to the aromatic ring. Friedel craft’s reaction is of two types i.e. alkylation and acylation. The Friedel crafts alkylation involves the addition of alkyl group to aromatic ring and Friedel craft’s acylation include the NO2 Cl CH3 > > > HYDROCARBONS 28 addition of acyl group to aromatic ring in the presence of strong Lewis acid catalyst. The following reaction is shown below: Hence, the correct option is (b). 143. Which of the following represents Friedel-Craft’s alkylation reaction? (a) (b) (c) (d) Friedel craft’s reactions a