An effective bismuth trichloride-catalyzed synthesis of 1,8-dioxo-octahydroxanthenes

作者:Li Jian Jiong; Tao Xu Ye; Zhang Zhan Hui*
来源:Phosphorus, Sulfur, and Silicon and the Related Elements, 2008, 183(7): 1672-1678.
DOI:10.1080/10426500701724530

摘要

Bismuth trichloride has been found to be an efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes from aromatic aldehydes and 5,5-dimethyl-1,3-cyclohexanedione under solvent-free conditions in high yields.