the synthesis of (E)-3-arylimino-3H-indolizin-4-ium-1-olates by an iodate-promoted multicomponent reaction between 3,3-difluorocyclopropenes, pyridines, and anilines was discovered. The reaction products belong to a limited and underexplored class of pseudo-cross-conjugated heterocyclic mesomeric betaines isoconjugated with odd nonalternant hydrocarbon anions, whose properties were studied. Reversible
发现了一种通过
碘酸盐促进的
3,3-二氟环丙烯、
吡啶和
苯胺之间的多组分反应合成 ( E )-3-arylimino-3 H -indolizin-4-ium-1-olate的简单方法。反应产物属于一类与奇数非交替烃阴离子等共轭的假交叉共轭杂环内消旋
甜菜碱,其性质已被研究。C5 位的可逆亲核加成是它们的主要
化学特征,可以得到新的完全共轭的 1,5-dioxo-3-arylamino-1,5-dihydroindolizine 和四环 4-oxo-4,6-dihydrocyclopenta[ 4,5]
嘧啶并[2,1,6- cd]中氮
茚环系统一步到位。
甜菜碱的合成及其转化都表现出高度的官能团相容性,从而可以为材料或药物
化学制备许多结构上有吸引力的化合物。