作者:Kajtár, Mihály、Király, Sándor Balázs、Bényei, Attila、Kiss-Szikszai, Attila、Kónya-Ábrahám, Anita、Zhang, Ning、Horváth, Lilla Borbála、Bősze, Szilvia、Li, Dehai、Kotschy, Andras、Paczal, Attila、Kurtán, Tibor
DOI:10.1021/acs.joc.4c00299
日期:——
Knoevenagel-cyclization reactions of N-arylcinnamylamines were carried out with active methylene reagents, which took place with five competing cyclization mechanisms: intramolecular hetero Diels–Alder reaction, stepwise polar [2 + 2] cycloaddition, styryl or aza-Diels–Alder reactions followed by rearomatization, and [1,5]-hydride shift-6-endo cyclization. In the stepwise aza-Diels–Alder reaction, the N-vinylpyridinium
使用活性亚甲基试剂进行N-芳基肉桂胺的 Domino Knoevenagel 环化反应,该反应通过五种竞争环化机制进行:分子内杂 Diels-Alder 反应、逐步极性 [2 + 2] 环加成、苯乙烯基或氮杂-Diels-Alder 反应随后进行重芳构化和[1,5]-氢化物移位-6-内环化。在逐步氮杂-狄尔斯-阿尔德反应中, N-乙烯基吡啶鎓部分充当氮杂二烯,产生具有四氢喹嗪鎓和四氢喹啉亚基的稠合杂环。一些新型支架具有低微摩尔IC 50值的抗增殖活性。