broad assortment of carbonyl-containing compounds. In aqueous media, selective reduction of carbonyls to 1° amines was achieved in the absence of acids. Unfortunately, at Ir catalyst concentrations of <1 mM in water, reductive amination efficiency dropped significantly, which suggest that this catalytic methodology might be not suitable for aqueous applications where very low catalyst concentration is
使用
甲酸铵作为氮源和
氢化物源的半夹心
铱配合物可以促进醛和酮向 1°胺的转化。为了优化这种绿色
化学合成方法,我们在生理温度 (37 °C) 和环境压力下在常见极性溶剂中测试了各种羰基底物。我们发现,在
甲醇中,对于广泛种类的含羰基化合物,可以实现胺对醇/酰胺产物的优异选择性。在
水性介质中,在不存在酸的情况下,羰基化合物选择性还原为 1° 胺。不幸的是,在
水中 Ir 催化剂浓度 <1 mM 时,还原胺化效率显着下降,