The composition of the products obtained by Pd-catalyzed allylation of diethyl (alkyl)-malonates and ethyl cyanoacetate with allylic acetates under phase-transfer conditions using potassium carbonate or phosphate as bases depended strongly on the nature of the reactants and the ligands used. The highest yields and the fraction of the “linear” regioisomers were achieved in the reactions of prenyl or 3-methylbut-1-en-3-yl acetates in the presence of phosphordiamidite ligands.
在使用
碳酸钾或
磷酸盐作为碱的相转移条件下,Pd催化的
二乙基(烷基)
马来酸酯和乙基
氰乙酸酯与烯丙基
醋酸酯的反应所得产品的组成,强烈依赖于反应物的性质和所使用的
配体。在存在
磷酸二胺
配体的条件下,对烯丙基或3-甲基丁-1-烯-3-醇
醋酸酯的反应中,得到了最高的产率和“线性”区位异构体的比例。