Stereochemistry of the products of reductive amination of 2,6-bis[(2-oxocyclohexyl)methyl]cyclohexanone, an alicyclic 1,5,9-triketone
作者:Taisia I. Akimova、Natalia S. Kravchenko、Vladimir A. Denisenko
DOI:10.1016/j.tet.2008.02.090
日期:2008.5
The reductive amination of alicyclic 1,5,9-triketone—2,6-bis[(2-oxocyclohexyl)methyl]cyclohexanone—has been studied under Leuckart reaction conditions and in the presence of NaBH3CN. A mixture of diastereomers of quinolizidine structure (2,3,5,6-bistetramethylenehexahydrojulolidine) is obtained. The stereochemistry of seven isomers is determined by the study of their NMR spectra using 2D NMR experiments
在Leuckart反应条件下和NaBH 3 CN存在下,已经研究了脂环族1,5,9-三酮-2,6-双[(2-氧代环己基)甲基]环己酮的还原胺化。获得喹喔啉结构(2,3,5,6-双四亚甲基六氢呋喃核苷)的非对映异构体的混合物。通过使用2D NMR实验(1 H– 1 H COSY,HSQC和HMBC)对其NMR光谱进行研究,可以确定七个异构体的立体化学。