An efficient protocol for deoxygenation of alpha,beta-unsaturated acylphenols through ethyl o-acylphenylcarbonates with Luche reduction is described. The reaction shows very good selectivity and tolerates a wide range of functionalities on alpha,beta-unsaturated acylphenols, giving corresponding 2-allylphenols in good to excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.
reaction, Sharpless asymmetric dihydroxylation, regioselective iodination, Sonogashira coupling, and rhodium-catalyzed oxidative coupling as key steps. The structure of the keyintermediate for wikstrol A was confirmed via its derivative by single-crystal X-rayanalysis.