1-Ethyl-3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(4-(trifluoromethyl)thiazol-2-yl)pyridin-2-yl)urea 、
6-bromo-2-(2-hydroxyethyl)-2,3-dihydrophthalazine-1,4-dione 、
7-bromo-2-(2-hydroxyethyl)-2,3-dihydrophthalazine-1,4-dione 在
四(三苯基膦)钯 caesium carbonate 作用下,
以
1,4-二氧六环 、
水 为溶剂,
反应 2.0h,
生成 1-ethyl-3-(5-(2-(2-hydroxyethyl)-1,4-dioxo-1,2,3,4-tetrahydrophthalazin-6-yl)-4-(4-(trifluoromethyl)thiazol-2-yl)pyridin-2-yl)urea 、 1-ethyl-3-(5-(3-(2-hydroxyethyl)-1,4-dioxo-1,2,3,4-tetrahydrophthalazin-6-yl)-4-(4-(trifluoromethyl)thiazol-2-yl)pyridin-2-yl)urea