4-Nitrotoluene is treated with bromine to get a cornpound \'P\'. \'P\' is reduced with Sn and
Channel: Doubtnut
Date: 2020-03-29

4-Nitrotoluene is treated with bromine to get a cornpound \'P\'. \'P\' is reduced with Sn and HCl to get compound \'Q \' .\'Q\' is diazotised and the product ,is treated with Phosphini, acid to get a compound \'R\' . R is oxidised with alkalin `KMnO_(4)` to get compound \'S\'. Compound \'S\' is :