Facile preparation of polycyclic halogen-substituted 1,2,3-triazoles by using intramolecular Huisgen cycloaddition
作者:Kazuki Kobayashi、Nozomi Kasakura、Seiya Kikukawa、Shota Matsumoto、Satoru Karasawa、Takeshi Hata
DOI:10.1039/d3ob01283b
日期:——
When 1-(ω-azidoalkyl)-2-(2,2-dihalovinyl)arenes were heated in DMF, the intramolecular Huisgen cycloaddition of an azido group with a 1,1-dihalovinyl group afforded 5-halo-1,2,3-triazole-fused tricyclic benzo compounds. Based on the remaining bromo groups, carbon elongation by the Mizoroki–Heck or Suzuki–Miyaura coupling reactions, followed by an intramolecular Friedel–Crafts reaction, afforded polycyclic
当1-(ω-叠氮烷基)-2-(2,2-二卤乙烯基)芳烃在DMF中加热时,叠氮基与1,1-二卤乙烯基发生分子内Huisgen环加成,得到5-卤代-1,2,3 -三唑稠合三环苯并化合物。基于剩余的溴基团,通过 Mizoroki-Heck 或 Suzuki-Miyaura 偶联反应进行碳伸长,然后进行分子内 Friedel-Crafts 反应,得到具有稠合三唑环的多环化合物。此后,通过Suzuki-Miyaura偶联反应将溴基团转化为2-硝基苯基团,随后进行Cadogan反应;得到荧光五环化合物。