Process for the synthesis of 5-allybenzodioxoles

摘要

The following description refers to a new process for the synthesis of 5-alkylated benzoÄ1,3Üdioxole, consisting in the following steps in sequence: catalytic hydrogenation of 4-acylphenol; acylation; displacement catalysed by Lewis acids; treatment with an inorganic basic compound and hydrogen peroxide; reaction with alkyl dihalides or dialkoxyalkanes. The process described herein, which yields 5-alkylbenzoÄ1,3Üdioxoles, is economic and can be easily scaled up to industrial size.