Recyclization of 2-iminocoumarin-3-carbonitriles with 2-aminothiobenzamide: a new synthetic route to substituted 2-(2-iminocoumarin-3-yl)quinazoline-4(3<i>H</i>)-thiones
作者:Pavlo E. Shynkarenko、Sergiy V. Vlasov、Sergiy M. Kovalenko、Valentin P. Chernykh
DOI:10.1080/17415993.2010.509506
日期:2010.10.1
The reaction of 2-aminothiobenzamide with either 2-iminocoumarin-3-carbonitrile or 2-iminocoumarin-3-thiocarboxamides has been studied. It has been established that in both cases, 2-(2-iminocoumarin-3-yl)quinazoline-4(3H)-thiones are formed as the result of a two-step procedure. The reactions of 2-(2-iminocoumarin-3-yl)quinazoline-4(3H)-thiones with arylamines and alkylating agents have been studied