使用Biotage微波合成仪进行微波条件下芳基硼酸对3-乙酰氧基-1,3-二苯丙基烯的芳基化反应by耐士科技

The palladium-catalyzed arylation of rac-(E)-3-acetoxy-1,3-diphenylprop-1-ene with arylboronic acids was studied under controlled microwave irradiation conditions. Avariety of different catalysts, bases, and solvents were explored in order to achieve optimum yields in the shortest possible reaction times. The best isolated yields were obtained using Pd2(dba)3$CHCl3/PPh3 as the catalytic system, potassium phosphate monohydrate as the base, and toluene/H2O as a solvent system. Microwave irradiation using 5 mol% of the palladium catalyst for 90 s (max. temp 170 C) generally afforded the cross-coupling products in good to excellent yields.