反应详情

In the process for the production of 3,5-dimethyl-4-acetoxystyrene monomer, one may begin with commercially available 2,6-dimethyl phenol and esterify it with acetic anhydride to produce 2,6-dimethyl phenyl acetate. Then, via a Friedel-Crafts catalysis or Fries rearrangement this is converted to 3,5-dimethyl-4-hydroxy acetophenone. The 3,5-dimethyl-4-hydroxy acetophenone is then esterified with acetic anhydride. The latter is then hydrogenated to form 1-(3,5-dimethyl-4-acetoxyphenyl)ethanol. This is then dehydrated with an acid to form 3,5-dimethyl-4-acetoxystyrene monomer, copolymerized with unsubstituted 4-acetoxystyrene, and hydrolyzed to produce poly (3,5,-dimethyl-4-hydroxystyrene-co-4-hydroxystyrene).