5-(2-(2-cyclohexylethyl)benzylidene)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione                                                                                                                                                              在
                                                                                                                                                                                 
scandium tris(trifluoromethanesulfonate)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,2-二氯乙烷                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以91%的产率得到5-((2',3'-dihydrosipro[cyclohexane-1,1'-indene]-4'-yl)methyl)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione