Name the reagents used in the following reactions:

1) Bromination of Phenol to 2,4,6-tribromophenol

2) Butan-2-one to Butan-2-ol

3) Friedel-Crafts alkylation of anisole

4) Oxidation of primary alcohol to carboxylic acid

1) Bromine water

2)

It is a reduction process where in the presence of reducing agents like converts ketones to alcohols.

3) Alkyl halide with Aluminium Chloride and

4) Acidified

The primary alcohol is oxidised by gaining oxygen from the oxidising agent Potassium Permagnet to yield the product Carboxylic acid via the formation of intermediates aldehyde and an aldehyde hydrate.