62330-10-3

Preparation by a three-step synthesis: first, tosylation of a-methoxyphloroacetophenone with p-toluenesulfonyl chloride in the presence of potassium carbonate in refluxing acetone for 4 h. Allyl bromide and potassium carbonate were then added to the reaction mixture and refluxed for 30 h. Finally, saponification of the residue, isolated by distillation, with refluxing 5% methanolic potassium hydroxide for 4 h (38%).