Development of a Sustainable and Solventless Friedel-Crafts Acylation Reaction of an Aromatic Natural Product “Ar-Himachalene” over Nanostructured ZnO as a New Catalyst

Issam Houssini, Mohamed Anouar Harrad, Brahim Boualy, Abdelaaziz Ouahrouch, Mohamed Loughzail, Mustapha AitAli, Abdellah Karim


We describe the development of a sustainable and solventless acylation reaction of the naturally occurring product, namely 2,5,9,9-tetramethyl-6,7,8,9-tetrahydro-5H-benzocycloheptene [ar-himachalene], with acid chlorides over a new type of flower-shaped ZnO nanosructure as a hetrogenous catalyst at room temperature. The ZnO nanoflowers can efficiently and selectively catalyze the acylation of the aromatic group of ar-himachalene and be reused up to three times by simple filtration and washing without significant loss in their catalytic activity.

Keywords: Acylation, Natural product, Solventless, Zin Oxide nanostructure, Heterogenous Catalysis, Sustainability.

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ISSN (Paper)2224-3224 ISSN (Online)2225-0956

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