methyl (E)-2-oxo-4-(2,4-dichlorophenyl)but-3-enoate   、                                                                                      
dimethyl (E)-2-(1-hydroxy-3-phenylallylidene)malonate                                                                                                                                                              在
                                                                                                                                                                                 
奎宁                                                                                                                                  作用下,
                                                                                                                                                                                        反应 48.0h,
                                                                                                                生成                                                 
trimethyl (S,Z)-4-(cinnamoyloxy)-2-(2,4-dichlorophenyl)but-3-ene-1,1,4-tricarboxylate   、                                                                                             trimethyl (R,Z)-4-(cinnamoyloxy)-2-(2,4-dichlorophenyl)but-3-ene-1,1,4-tricarboxylate