Recyclizations of 2-aminobenzylimines and thioaroylhydrazones of<i>N</i>-substituted<i>N</i>-hydroxy-3-oxobutanamides
作者:Kirill N. Zelenin、Igor V. Lagoda、Valeriy V. Alekseyev、Jari Sinkkonen、Kalevi Pihlaja、Roustem A. Shaikhutdinov
DOI:10.1002/jhet.5570390428
日期:2002.7
A universal scheme is proposed for the molecular design of heterocyclic recyclizations by replacing the exocyclic hydroxyl groups in exo-trig- ring-chain tautomeric molecules with substituted amines or hydrazines. The practical applicability of this approach is demonstrated by the condensations of 5-hydroxy-5-methyl-3-isoxazolidinones with thioaroyl-hydrazines and 2-aminomethylaniline. The condensation
对于杂环再循环的分子设计,提出了一种通用方案,该方法是通过用取代的胺或肼取代外三-环链互变异构分子中的外环羟基。通过5-羟基-5-甲基-3-异恶唑烷酮与硫代芳酰基肼和2-氨基甲基苯胺的缩合证明了该方法的实际适用性。通过现代1 H,13 C和15 N NMR光谱方法,使用三种溶剂:CDC1 3,DMSO [D 6 ]和CD 3 CN来研究缩合产物。发现该溶剂对互变异构体的相对量具有强烈影响。