ethyl [(E)-3-(1,1,1-tributylstannyl)-2-propenyl] carbonate 、
2,2-dimethyl-5-(4-(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
(4R,2E)-4-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)but-2-enyl ethyl carbonate 、 (4S,2E)-4-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)but-2-enyl ethyl carbonate