Bianthryl-based organocatalysts for the asymmetric Henry reaction of fluoroketones
作者:Jan Otevrel、David Svestka、Pavel Bobal
DOI:10.1039/c9ob00884e
日期:——
catalytic system based on bianthrylbis(thiourea) for the asymmetric Henry reaction of fluoroketones and nitroalkanes that resulted from the screening of a library containing 31 chiral non-racemic organocatalysts. The corresponding adducts were isolated in up to 6 times shorter reaction time in comparison with the previously published organocatalysts. High levels of stereocontrol have been generally observed
我们已经开发了一种基于联蒽基双(硫脲)的催化体系,该体系用于筛选含31种手性非外消旋有机催化剂的文库,从而导致氟酮和硝基烷的不对称亨利反应。与以前发表的有机催化剂相比,在最短的6倍的反应时间中分离出了相应的加合物。通常观察到高水平的立体控制,所测量的产物对映体过量高达97%,非对映体比率为3:2(反/同)。上述催化剂已成功地用于CF3链状(S)-卤代丁烷的全不对称合成,这证明该方法很容易进入类似的对映纯化合物。