ZnBr₂-Catalyzed and Microwave-Assisted Synthesis of 2,3-Unsaturated Glucosides of Hindered Phenols and Alcohols

<div><p></p><p>Zinc bromide (ZnBr₂) under microwave irradiation efficiently catalyzed the Ferrier reaction of hindered phenols and alcohols to afford the corresponding α-2,3-unsaturated glucoside acetates in good yields and with good stereoselectivity. The reaction affords a facile access to new 2,3-dideoxyglucosides of important phenolic and alcoholic constituents of spices.</p> </div