1,4-Dihydropyridine equivalents: a novel approach to 2,6-dicyanopiperidine derivatives
作者:Tiina Putkonen、Emmi Valkonen、Arto Tolvanen、Reija Jokela
DOI:10.1016/s0040-4020(02)00896-7
日期:2002.9
For the first time, it has been shown that 2,6-dicyanopiperidines are formed in the Fry reaction via 1,4-dihydropyridine intermediates. A new synthetic approach for building 2,6-dicyanopiperidine derivatives by an extension of the sodium dithionite reduction of pyridinium salts is described. The stereochemistry of 2,6-dicyanopiperidine derivatives formed is discussed.
首次表明,在Fry反应中通过1,4-二氢吡啶中间体形成了2,6-二氰基哌啶。描述了通过扩大连二亚硫酸钠吡啶鎓盐的还原来构建2,6-二氰基哌啶衍生物的一种新的合成方法。讨论了形成的2,6-二氰基哌啶衍生物的立体化学。