Asymmetric Allylic Amination of Morita–Baylis–Hillman Adducts with Simple Aromatic Amines by Nucleophilic Amine Catalysis
作者:Xin Chen、Shuai Zhao、Zhi-Li Chen、Xue Rui、Ming-Mei Gao
DOI:10.1055/s-0037-1611740
日期:2019.4
Asymmetric allylic amination of Morita–Baylis–Hillman (MBH) adducts with simple aromatic amines is successfully realized by nucleophilic amine catalysis. A range of substituted α-methylene-β-arylamino esters is accessed in moderate to high yields (up to 88%) and with excellent enantioselectivities (up to 97% ee). Inorganic fluorides are found to be able to improve the enantioselectivity of the allylic
Morita-Baylis-Hillman (MBH) 加合物与简单芳香胺的不对称烯丙基胺化是通过亲核胺催化成功实现的。一系列取代的 α-亚甲基-β-芳基氨基酯以中等至高产率(高达 88%)和出色的对映选择性(高达 97% ee)获得。发现无机氟化物能够提高烯丙基胺化反应的对映选择性。吡咯-2-羧酸酯和环状酰亚胺也与该催化体系相容。手性 2,3-二氢喹啉-4-one 衍生物很容易从烯丙基胺化产物中获得。