I want to carry out a reaction in which I want to replace the chlorine of alkyl chloride with the OH group. What would be the best possible synthetic route to follow?
KMnO4 is an oxidant and you dont need an oxidation reaction.
Form the mechanistic side you do a nucleophilic subtituion either a SN1 or 2 reaction, the reactions conditions depending on the position of the chlorid, (primäre, secundary or tertiary).
Showkat Ahmad Hajam Friedels-Craft honestly?! Please look reactions up, before you give wrong answers. Friedels-Crafts reaction is an elctrophilic aromoatic sustitution reactions, which is used as an alkylation reaction on an aromat!
Two step procedures are often efficient and may be run in one pot. React the alkylating agent with potassium formate (my first solvent choice would be acetonitrile), then either isolate the resulting formate ester before saponification or else hydrolyze in situ to give the alcohol.