Write short notes on the following (i) Raschig process. (ii) Dows process. (iii) Darzens process.

Write short notes on the following (i) Raschig process. (ii) Dows pr

1.	Write short notes on the following (i) Raschig process. (ii) Dows process. (iii) Darzens process.
Answer» Solution :(i) Raschig process: Chloro benzene is commerically prepared by passing a MIXTURE of benzene vapour, air and HCL over heated cupric chloride is reaction is called Raschig process. (ii) Dows Process: `underset("Chlorobenzene")(C_(6)H_(5)Cl+NaOH) underset(300atm)overset(350^(@)C) to underset("Phenol")(C_(6)H_(5)OH)+NACL` This reaction is known as Dow's process. (iii) Darzens process: This reaction is known as Darzen's HALOGENATION.