The application of chiral amino thiols as catalysts in the enantioselective addition of diethylzinc to aldehydes
作者:Shi-Liang Tseng、Teng-Kuei Yang
DOI:10.1016/j.tetasy.2004.08.009
日期:2004.11
Starting from (S)-(−)-valine, a series of new chiral amino thiol and corresponding thioacetate ligands were prepared in an efficient manner and applied in the asymmetric diethylzinc addition to aldehydes with excellent enantioselectivity as high as 99% ee and with a catalytic loading as little as 0.02 mol % of the amino thiol 11c.
从(S)-(-)-缬氨酸开始,以高效的方式制备了一系列新的手性氨基硫醇和相应的硫代乙酸酯配体,并将其用于不对称二乙基锌锌中的醛,对映体选择性高达99%ee,且对映体选择性高。催化负载仅为氨基硫醇11c的0.02 mol%。