A Convenient Synthesis of 4-Aminoquinazoline Derivatives
作者:Isao Shibuya、Yasuo Gama、Masao Shimizu
DOI:10.3987/com-00-9110
日期:——
4-(N,N-Disubstituted amino)-2-substituted quinazoline derivatives (1 - 9) were newly synthesized through cyclodesulfurization of N-thiocarbonyl-arylamines with silver perchlorate in the presence of N,N-disubstituted cyanamides.
Ketenimines were conveniently synthesized from N-monosubstituted thioacetamides with dehydrating agents such as 2-chloro-1,3-dimethylimidazolinium chloride or 2-chloro-1-methylpyridinium iodide.