A reaction of 1,3,5-cycloheptatriene with 1,2-dienes in the presence of the two-component catalytic system TiCl4-Et2AlCl leads to regio- (∼99%) and stereoselective (>85%) formation of substituted endo-bicyclo[4.2.1]nona-2,4-dienes in up to 80% yields.
在双组分催化体系 TiCl4-Et2AlCl 的存在下,1,3,5-
环庚三烯与 1,2-二烯发生反应,生成取代的内双环[4.2.1]壬-2,4-二烯,生成率高达 80%,且具有区域选择性(∼99%)和立体选择性(>85%)。