Aminoalkyl-phosphine (P,N) ligands with pentane-2,4-diyl backbone in asymmetric allylic substitution reactions
作者:Zsófia Császár、Patrik Imre、Szabolcs Balogh、Attila Bényei、Gergely Farkas、József Bakos
DOI:10.1007/s00706-017-2029-2
日期:2017.12
AbstractThe asymmetric allylic substitution reaction of rac-1,3-diaryl-2-propenyl acetates with several C- and N-nucleophiles catalyzed by the palladium-complexes of eleven structurally analogous aminoalkyl-phosphines (P,N) with pentane-2,4-diyl backbone is reported. The role of the N-substituents and the influence of the ligand/palladium molar ratio on the activity and enantioselectivity of the catalytic
摘要十一结构相似的氨基烷基膦(P,N)与戊烷-2,4的钯配合物催化的rac -1,3-二芳基-2-丙烯基乙酸rac酯与几种C-和N-亲核试剂的不对称烯丙基取代反应报道了-二基主链。研究了N-取代基的作用以及配体/钯摩尔比对催化体系活性和对映选择性的影响。还评估了催化反应的溶剂和温度依赖性,在优化的反应条件下,烷基化反应的对映选择性高达95%,胺化反应的对映选择性高达90%。 图形概要