New phosphine-imine and phosphine-amine ligands derived from d -gluco-, d -galacto- and d -allosamine in Pd-catalysed asymmetric allylic alkylation
作者:Izabela Szulc、Robert Kołodziuk、Anna Zawisza
DOI:10.1016/j.tet.2018.02.009
日期:2018.3
New phosphine-imine and phosphine-amine chiral ligands which were easily prepared from d-gluco-, d-galacto- and d-allosamine furnished a high level of enantiomeric excess (up to 99%) in the Pd(0)-catalysed asymmetric allylic alkylation of racemic 1,3-diphenyl-2-propenyl acetate with malonates.
容易从d-
葡萄糖-,d-半
乳糖和d- allosamine制备的新的膦-
亚胺和膦-胺手性
配体在Pd(0)催化的不对称中提供了高
水平的对映体过量(最高达99%)。外消旋的1,3
-二苯基-2-
丙烯基
乙酸酯与
丙二酸酯的
烯丙基烷基化。