4-(苄氧基羰基)苯硼酸 、 tert-butyl {7-[(1-bromo-2-methylindolizin-3-yl)carbonyl]-2,4-dioxo-1,4-dihydroquinazolin-3(2H)-yl}acetate 在
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride 作用下,
以
aq. phosphate buffer 、
N,N-二甲基甲酰胺 为溶剂,
反应 0.5h,
以92%的产率得到benzyl 4-(3-{[3-(2-tert-butoxy-2-oxoethyl)-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-7-yl]carbonyl}-2-methylindolizin-1-yl)benzoate