143809-79-4Relevant academic research and scientific papers
Cycloaddition Reactions of 2-Acetylamino-, 2-Alkylamino-, 8-Ethylamino-, and 8-Acetylamino-1-azaazulenes with Dimethyl Acetylenedicarboxylate
Abe, Noritaka,Fukazawa, Yoshimasa,Hirai, Yoshimasa,Sakurai, Tosio,Urushido, Kunio,Kakehi, Akikazu
, p. 1784 - 1793 (1992)
The reactions of 2- and 8-(substituted amino)-1-azaazulenes with dimethyl acetylenedicarboxylate (DMAD) were investigated.Treatment of ethyl 2-acetylamino-1-azaazulene-3-carboxylate with DMAD in refluxing acetonitrile gave 9-ethyl 1,2,3-trimethyl 3a-azacy
