Enantioselective Friedel–Crafts Alkylation Reactions of β‐Naphthols with Donor–Acceptor Aminocyclopropanes
作者:Man Zhu、Dong‐Chao Wang、Ming‐Sheng Xie、Gui‐Rong Qu、Hai‐Ming Guo
DOI:10.1002/chem.201804032
日期:2018.10.17
Friedel–Crafts alkylation reaction of β‐naphthols with donor–acceptor aminocyclopropane was developed. In the presence of a copper complex derived from Cu(OTf)2 and bisoxazoline, a series of γ‐substituted γ‐aminobutyric acid derivatives were obtained with good yields (up to 98 %) and excellent enantioselectivities (up to 98 %). Using this catalytic system, the 2‐amino cyclopropane‐1,1‐dicarboxylate was obtained
开发了β-萘酚与供体-受体氨基环丙烷的对映选择性Friedel-Crafts烷基化反应。在衍生自Cu(OTf)2和双恶唑啉的铜络合物的存在下,获得了一系列γ-取代的γ-氨基丁酸衍生物,具有良好的收率(高达98%)和出色的对映选择性(高达98%)。使用该催化系统,通过有效的动力学拆分(s值高达90)获得了对映体过量很高(高达98%)的2-氨基环丙烷-1,1-二羧酸酯。Friedel-Crafts烷基化产物可以转化为四环1,3-恶嗪衍生物。