通过N H吡啶2(1 H)-酮(2-吡啶酮)的化学选择性N-烯基化,区域选择性加成烯丙基锂(二-正丁基)的化学合成N吡啶基简单地合成官能化的喹啉并丁4-酮的范围和局限性将镁酸盐(1-)转变为N-烯基吡啶-2(1 H)-,然后进行闭环复分解(RCM)。引入喹喔啉-4-酮环的许多功能化表明了支架合成中提出的策略的高前景。还介绍了它们扩展到吡啶并[1,2 - a ]氮杂环庚烷-4-酮和吡啶并[1,2 - a ]偶氮星-4-酮衍生物的合成以及螺环稠合化合物的合成。
通过N H吡啶2(1 H)-酮(2-吡啶酮)的化学选择性N-烯基化,区域选择性加成烯丙基锂(二-正丁基)的化学合成N吡啶基简单地合成官能化的喹啉并丁4-酮的范围和局限性将镁酸盐(1-)转变为N-烯基吡啶-2(1 H)-,然后进行闭环复分解(RCM)。引入喹喔啉-4-酮环的许多功能化表明了支架合成中提出的策略的高前景。还介绍了它们扩展到吡啶并[1,2 - a ]氮杂环庚烷-4-酮和吡啶并[1,2 - a ]偶氮星-4-酮衍生物的合成以及螺环稠合化合物的合成。
Regioselective Synthesis of 6-Vinyl-3,6-dihydropyridine-2(1<i>H</i>)-ones through Simple Addition of a Vinylmagnesium “Ate” Complex to 2-Pyridones
作者:Jacek G. Sośnicki、Przemysław Dzitkowski、Łukasz Struk
DOI:10.1002/ejoc.201500605
日期:2015.8
vinyldimethylmagnesate (vinylMe2MgLi), is obtained by mixing vinylmagnesium chloride (1 equiv.) and MeLi (in diethoxymethane; 2 equiv.). The application of this new reagent in the completely regioselectivesynthesis of 6-vinyl-3,6-dihydro-1H-pyridin-2(1H)-ones by simple 1,6-additions to 2-pyridones is described. Examination of the scope and limitations of the addition revealed the influence on the efficiency of the
Convenient approach to tetrahydro-quinolizin-4-ones by sequential addition of lithium allyldibutylmagnesate to N-allylpyridin-2-ones and ring-closing metathesis reactions
作者:Jacek G. Sośnicki
DOI:10.1016/j.tetlet.2006.07.072
日期:2006.9
A new strategy based on allylation of N-allylpyridin-2-ones with the lithium allyldibutylmagnesate reagent followed by ring-closing metathesis in a sequential fashion to access the quinolizidine skeleton with olefinic bonds in both rings is reported.