ZnCl2-catalyzed [4 + 2] benzannulation of 2-ethynylbenzaldehydes with alkynes: Selective synthesis of naphthalene derivatives
作者:Xiao-Li Fang、Ri-Yuan Tang、Xing-Guo Zhang、Ping Zhong、Chen-Liang Deng、Jin-Heng Li
DOI:10.1016/j.jorganchem.2010.09.062
日期:2011.1
Zn-catalyzed [4 + 2] benzannulation of 2-ethynylbenzaldehydes with alkynes is described for the selectivesynthesis of naphthalene derivatives. In the presence of ZnCl2, a variety of 2-ethynylbenzaldehydes underwent the [4 + 2] benzannulation reactions with alkynes to selectively afford the corresponding naphthalene derivatives in moderate to good yields.