ethyl [(E)-3-(1,1,1-tributylstannyl)-2-propenyl] carbonate   、                                                                                      
2,2-dimethyl-5-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzylidene)-1,3-dioxane-4,6-dione                                                                                                                                                              在
                                                                                                                                                                                 silver hexafluoroantimonate   、                                                                                                  chlorobis(ethylene)rhodium(I) dimer   、                                                                                                  5-methoxy-1,5-dimethyl-2-(2-(trifluoromethyl)phenyl)bicyclo[2.2.2]octa-2,7-diene                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 45.0h,
                                                                                                                生成                                                 (4S,2E)-4-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)-4-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)but-2-enyl ethyl carbonate   、                                                                                             
(4R,2E)-4-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)-4-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)but-2-enyl ethyl carbonate