4394-54-1

Preparation by acylation of 2-chloroanisole,
with propionic anhydride in the presence of ferric chloride (62%);
with propionyl chloride in the presence of aluminium chloride in carbon disulfide (62%), in methylene chloride for 3 h at 0° or for 1.5 h at r.t. with addition of ammonium chloride (72%).