Enantio- and chemoselective Brønsted-acid/Mg(<sup>n</sup>Bu)<sub>2</sub> catalysed reduction of α-keto esters with catecholborane
作者:Dieter Enders、Bianca A. Stöckel、Andreas Rembiak
DOI:10.1039/c4cc00427b
日期:——
The first enantio- and chemoselective Bronsted-acid catalysed reduction of alpha-keto esters with catecholborane has been developed. The alpha-hydroxy esters were obtained under mild reaction conditions in virtually quantitative yields and excellent enantioselectivities. With slight modifications both enantiomers can be obtained without any loss of selectivity.
已开发出第一对映体和化学选择性布朗斯台德酸催化的儿茶酚硼烷还原α-酮酯。α-羟基酯是在温和的反应条件下以实际上定量的产率和优异的对映选择性而获得的。稍作修饰,即可得到两种对映体,而不会损失任何选择性。