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 were explored in this Michael addition.

中文翻译：

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绿色 H2O 促进无溶剂合成具有高立体选择性的烯氨基羰基化合物与缺电子末端炔烃

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。