Palladium-catalyzed [3+2+1] cyclocarbonylative coupling of 1,3-cyclohexanediones, alkynes, and carbon monoxide: an atom-economic route to chromene-2,5-dione derivatives
作者:Bei Wu、Ruimao Hua
DOI:10.1016/j.tetlet.2010.09.132
日期:2010.12
3,4,7,8-Tetrahydro-2H-chromene-2,5(6H)-dione derivatives were efficiently synthesized with excellent selectivity via a [3+2+1] cyclocarbonylativecoupling of 1,3-cyclohexanediones, terminal alkynes, and CO catalyzed by Pd(PPh3)4.