Highly enantioselective synthesis of α-fluoro-α-nitro esters via organocatalyzed asymmetric Michael addition
作者:Hai-Feng Cui、Peng Li、Xiao-Wei Wang、Zhuo Chai、Ying-Quan Yang、Yue-Peng Cai、Shi-Zheng Zhu、Gang Zhao
DOI:10.1016/j.tet.2010.11.041
日期:2011.1
amines catalyzed the asymmetric Michael addition of ethyl 2-fluoro-2-nitroacetate to enones to provide chiral α-fluoro-α-nitro ester ketones with two contiguous stereogenic centers, one of which is a fluorinated quaternary chiral center, with excellent enantioselectivities and in moderate to good yields.
伯胺催化2-氟-2-硝基乙酸乙酯向烯酮的不对称迈克尔加成,从而提供具有两个连续的立体中心的手性α-氟-α-硝基酯酮,其中一个是氟化的季手性中心,具有出色的对映选择性和中等至良好的产量。