Asymmetric ring opening reactions of symmetrical N-acylaziridines with thiols catalyzed by chiral dialkyl tartrate-diethylzinc complexes
作者:Masahiko Hayashi、Kazuyuki Ono、Haruhisa Hoshimi、Nobuki Oguni
DOI:10.1016/0040-4020(96)00370-5
日期:1996.6
The asymmetric ring opening reaction of 1,2-(N-acylimino)cyclohexanes (N-acylaziridines) with some thiols proceeded in the presence of chiral zinc complexes prepared from diethylzinc and dialkyl L-(+)-tartrate to afford trans 2-(N-acylamino)-1-arylthiocyclohexane in up to 93% ee. The enantioselectivity is highly influenced by the molar ratio of the reactants and the nature of chiral dialkyl tartrate
在由二乙基锌和L-(+)-酒石酸二烷基酯制备的手性锌络合物的存在下,进行1,2-(N-酰基亚氨基)环己烷(N-酰基环丙啶)与一些硫醇的不对称开环反应,得到反式2-(N-酰基氨基)-1-芳基硫代环己烷的ee最高可达93%。对映选择性很大程度上受反应物的摩尔比和手性酒石酸二烷基酯的性质的影响。L-(+)-酒石酸锌-二烷基络合物的化学结构通过1 H NMR光谱和分子量进行了讨论。