Synthesis of Dihydrobenzofurans via Palladium-Catalyzed Annulation of 1,3-Dienes by <i>o</i>-Iodoaryl Acetates
作者:Roman V. Rozhkov、Richard C. Larock
DOI:10.1021/jo100495t
日期:2010.6.18
palladium-catalyzed annulation of 1,3-dienes by o-iodoaryl acetates provides an efficient approach to biologically interesting dihydrobenzofurans. The annulation is believed to proceed via (1) oxidative addition of the aryl iodide to Pd(0), (2) syn-addition of the resulting arylpalladium complex to the 1,3-diene, (3) intramolecular coordination of the phenolic oxygen to the Pd center, (4) hydrolysis of the acetyl