The B,N-bifunctional catalyst homoboroproline has been applied to a catalytic asymmetric nitroalkene-Michael addition to β-nitrostyrene analogues, showing broad substrate tolerance, high conversions and moderate to good asymmetric induction. The ability of homoboroproline to act as an efficient catalyst based on enamine-formation of the secondary amine, coupled with intramolecular Lewis-acid chelation
B,N-双功能催化剂高
硼脯
氨酸已应用于催化不对称硝基烯烃-迈克尔加成到
β-硝基苯乙烯类似物,显示出广泛的底物耐受性、高转化率和中等至良好的不对称诱导。homoboroproline的充当基于所述仲胺的烯胺形成一种有效的催化剂,加上分子内的能力路易斯硝基功能的-酸螯合,在非FLP方式,以实现高效和对映选择性催化通过所提议的大10 -元环过渡态是显着的,并通过理论计算得到加强。