Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Changle West Road 169, Xi'an, 710032, P. R. China.
Org Biomol Chem. 2018 Apr 25;16(16):3012-3017. doi: 10.1039/c8ob00583d.
The direct enantioselective amination of nitroolefins has been performed with l-tert-leucine-derived squaramide-scaffold bifunctional phase-transfer catalysts under base-free and water-rich conditions with low catalyst loading (0.5-1 mol%) to provide 2-aminonitroalkanes in good yields (up to 96%) and enantioselectivities (up to 93% ee).
在无碱和富水条件下,使用 l-叔亮氨酸衍生的双功能席夫碱型手性相转移催化剂,以低催化剂负载量(0.5-1mol%)直接对硝基烯烃进行对映选择性胺化反应,以良好的收率(高达 96%)和对映选择性(高达 93%ee)得到 2-氨基硝基烷烃。