Reactions catalyzed interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend on composition, collectively referred to as solvent effects. In a patent，Which mentioned a new discovery about Recommanded Product: Methyl 1,4-Benzodioxane-2-carboxylate, Recommanded Product: Methyl 1,4-Benzodioxane-2-carboxylate
A general method for the regioselective solvent free Friedel-Crafts acylation of 2-substituted-1,4-benzodioxin derivatives in excellent yields employing the AlCl3-DMA reagent with acyl halides or anhydrides as acylating agents is described. The acylation of 2-substituted-1,4-benzodioxin derivatives provides the 6-acyl compound as the major product. However, the saturated analogs affords the 7-acyl regioisomer as the main compound.
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