haloalkane and haloarenes 3
Channel: Science Rider
Date: 30/12/2021

#chemistry #NCERT #CBSE #NEET #JEE
#Science #organic chemistry
haloarenes are electron-rich compounds. Therefore, they can undergo electrophilic substitution reaction and the attacking species, in this case, will be an electrophile. The +M effect will result in the concentration of electron density at ortho −and para −positions.In halogenation of haloarenes, ortho and para substitution occurs when dihalogen reacts with haloarenes in the presence of lewis acids such as Fe, FeCl3, AlCl3.
The Sandmeyer reaction is a chemical reaction which is used to synthesize aryl halides from aryl diazonium salts. This reaction is a method for substitution of an aromatic amino group by preparing diazonium salt, that is followed by its displacement and copper salts often catalyze it.