作者:Dao-Lin Wang、Jian Ma、Xiao-Ce Shi、Jian-Ying Wu
DOI:10.3987/com-15-13364
日期:——
A simple and efficient procedure was developed for the synthesis of 1-aryl-3-cyano-4-oxo- 10-ethoxycarb onylazuleno [2,1-b]pyridazines (3) in good yields by condensation of ethyl 1-cyanoacetyl-2-methoxyazulene-3-carboxylate (1) with aryldiazonium salt (2) in pyridine via a domino reaction. This reaction provides a new procedure for synthesis of heterocyle-fused azulenes.