Tautomer-selective derivatives of enolate, ketone and enaminone by addition reaction of picolyl-type anions with nitriles
作者:Jianliang Bai、Peng Wang、Wei Cao、Xia Chen
DOI:10.1016/j.molstruc.2016.09.038
日期:2017.1
describe an efficient for the synthesis of compounds of tautomeric β-pyridyl/quinolyl-enol, -ketone, -enaminone, which were finally characterized by standard methods like NMR, IR or SCXRD. The addition reaction of lithiated intermediates of picoline, 2-ethylpyridine and 2-methylquinoline, respectively, with nitriles followed by acid hydrolysis afforded the corresponding tautomeric compounds of enol,
摘要 我们描述了一种有效合成互变异构 β-吡啶基/喹啉-烯醇、-酮、-烯胺酮的化合物,最终通过标准方法如 NMR、IR 或 SCXRD 对其进行表征。甲基吡啶、2-乙基吡啶和2-甲基喹啉的锂化中间体分别与腈的加成反应,然后酸水解得到相应的烯醇、酮和emaminone互变异构化合物。有趣的是,分别用腈处理 2-甲基吡啶或 2-乙基吡啶,主要产生不含烯胺酮的 β-吡啶基酮和烯醇互变异构体,而用腈处理 2-甲基喹啉产生不含烯醇的 β-喹啉酮和烯胺酮互变异构体。2-苄基吡啶与腈的反应在相同条件下无法进行。