Enantioselective conjugate addition, part V. Synthesis and testing of scalemic tetraamines as chiral cuprate ligands.
作者:Nicole M. Swingle、K.Vasavi Reddy、Bryant E. Rossiter
DOI:10.1016/s0040-4020(01)89378-9
日期:1994.4
Reported herein is the enantioselective conjugate addition of n-butyl to 2-cyclopentenone, 2-cyclohexenone, 2-cycloheptenone and 2-cyclooctenone using scalemic amidocuprates derived from copper(I) iodide, n-butyllithium and a homologous series of 5 scalemic tetraamines referred to as DIMMAP-2 through -6. Cuprates derived from DIMAPP-4 manifest the highest enantioselectivities (up to 78%) and the same
本文报道的是使用衍生自碘化铜(I),正丁基锂和同族的5种四阶四胺的同系列酰胺基铜酸盐,将正丁基对映选择性共轭加成至2-环戊烯酮,2-环己烯酮,2-环庚烯酮和2-环辛烯酮。到DIMMAP-2至-6。来自DIMAPP-4的铜酸盐显示出最高的对映选择性(高达78%),并且与这些新铜酸盐所基于的MAPP铜酸盐具有相同的对映选择性。先前制定的机械建议已被修订,以解决所观察到的问题。