A series of chiral indolinylmethanol ligands have been applied for the first time in the asymmetric Reformatsky reaction of an α-bromoester with ketones. In the presence of NiBr2 and zinc powder, up to 75% yield and 87% ee were obtained for a variety of aromatic and aliphatic ketones. The use of Ni(acac)2 resulted in 96% ee although the corresponding yield was low. This process provided a convenient
在α-
溴酸酯与酮的不对称Reformatsky反应中,首次应用了一系列手性
吲哚基
甲醇配体。在NiBr 2和
锌粉的存在下,各种芳族和脂族酮的收率均达到75%,ee达到87%。Ni(acac)2的使用产生了96%的ee,尽管相应的收率很低。该方法提供了一种方便的方法来获得合成上有用的手性β-羟基酯。