A new palladium‐catalyzed intramolecular oxidativecycloisomerization of readily available starting materials, 2‐cinnamyl‐1,3‐dicarbonyls, has been demonstrated for the creation of structurally diverse 2‐benzyl furans. The cycloisomerization occurs by a regioselective 5‐exo‐trig pathway. The reaction shows a broad substrate scope with good to excellent yields. Furthermore, a one‐pot procedure has been
Iodine-catalyzed allylation of 1,3-dicarbonyl compounds with allylic alcohols at room temperature
作者:Weidong Rao、Adeline Hui Ling Tay、Pei Jing Goh、Jessica Mun Ling Choy、Justin Kaijie Ke、Philip Wai Hong Chan
DOI:10.1016/j.tetlet.2007.11.005
日期:2008.1
A highly efficient iodine-catalyzed allylation of 1,3-dicarbonyl compounds with a wide variety of allylic alcohols has been developed. The reaction is operationally straightforward and proceeds under very mild conditions at room temperature in good to excellent yields (up to 99%) and regioselectivity. (c) 2007 Elsevier Ltd. All rights reserved.