Green H2O-Promoted Solvent-Free Synthesis of Enaminocarbonyl Compounds with High Stereoselectivity from Electron-Deficient Terminal Alkynes
作者:Xiao Yun Chen、Luming Zhang、Yaonan Tang、Shuxia Yuan、Baocheng Zhu、Guang Chen、Xiaofang Cheng
DOI:10.1055/s-0040-1707968
日期:2020.6
A green H2O-promoted solvent-free hydroamination of electron-deficient terminal alkynes with amines has been developed. All secondary amines, including aliphatic and aromatic amines, gave the corresponding (E)-enamines in good to excellent yields, whereas primary aromatic amines afforded Z-configured products in moderate yields. Propiolates, propyn-1-ones, propynamides, and 1-(ethynylsulfonyl)-4-methylbenzene
已开发出一种绿色 H2O 促进的缺电子末端炔烃与胺的无溶剂加氢胺化。所有仲胺,包括脂肪族和芳族胺,都以良好到极好的产率得到相应的 (E)-烯胺,而伯芳胺以中等产率提供 Z-构型的产物。在此迈克尔加成中探索了丙炔酸酯、丙炔-1-酮、丙炔酰胺和 1-(乙炔基磺酰基)-4-甲基苯。