prepared in high yields and enantiomeric excess. The allylation was performed under catalysis of iridium-chiral cyclic phosphoramidite complexes, in which the reactivity and enantioselectivity of the substrates were elaborately tuned by our developed chiral cyclic phosphoramidite ligands with adjustable sizes of rings.
(E)-4-(烷基(4-氧代-3,4-二氢
喹唑啉-2-基)
氨基)丁-2-烯-1-基甲基
碳酸酯的高效,对映选择性分子内烯丙基化反应得到了开发,并且相应的高产率和对映体过量制备了二氢
咪唑并
喹唑啉酮。烯丙基化是在
铱-手性环状亚
磷酰胺络合物的催化下进行的,其中我们开发的具有可调环尺寸的手性环状亚
磷酰胺
配体精心调节了底物的反应性和对映选择性。