Microwave-assisted arylation of rac-(E)-3-acetoxy-1,3-diphenylprop-1-ene with arylboronic acids By Biotage Initiator耐士科技
2015-02-27 10:25
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Abstract—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.
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We herein report several highly active catalyst systems with thiadiazolidine 1-oxides as ligands for palladium in the MizorokieHeck reaction. Excellent yields of stilbenes derived from aryl iodides and bromides have been achieved using as little as 0.00002 mol % catalyst. The ligand/palladiumsystem can be stored as a stock solution open to air at room temperature with no observable loss of activity for a period of several months.
耐士科技作为Biotage中国区总代理,以优质的服务为您提供Biotage全系产品以及相关的技术服务。1、开机前确认自动收集机械手臂下无障碍物,试管高度低于机械手臂收集针
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耐士科技作为Biotage中国区总代理,以优质的服务为您提供Biotage全系产品以及相关的技术服务。
操作步骤:
1.开机,按屏幕左下方黑色电源键
2.进入开机界面后,点击
Organic Synthesis
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