Synthesis of Aryl Conjugated (1-Azaazulenyl)acetylenes and Facile Synthesis of Thiophene Fused 1-Azaazulenes

Synthesis of Aryl Conjugated (1-Azaazulenyl)acetylenes and Facile Synthesis of Thiophene Fused 1-Azaazulenes

Creators Abe Noritaka

Creators Harada Yohei

Creators Imachi Yukiko

Creators Fujii Hiroyuki

Creators Kakehi Akikazu

Creators Shiro Motoo

3-Ethynyl-1-azaazulene derivatives were obtained by Sonogashira-Hagihara reaction of 3-iodo-2-chloro-1-azaazulenes, and 2-(phenylethynyl)-1-azaazulenes were obtained by the reaction of 2-bromo-1-azaazulenes. Glaser reaction of 2-chloro-3-ethynyl-1-azaazulenes gave 1,4-bis(2-chloro-1-azaazulen-3-yl)-1,3-butadiyne. Treatment of 2-chloro-3-ethynyl-1-azaazulene derivatives with sodium hydrosulfide gave corresponding 1-thia-9-azacyclopent[a]azulene derivatives in good yield.

[ISSN]0385-5414

[NCID]AA00663739