Reaction of nitriles under acidic conditions. Part III. A facile synthesis of thienopyrimidin‐4(3<i>H</i>)‐ones

Abstract

Abstract A variety of thiophene o ‐aminoesters were reacted with cyanates, thiocyanates, cyanamides, acyl cyanides and α‐functionalized acetonitrile derivatives to yield the corresponding 2‐substituted thienopyrimidin‐4(3 H )‐ones.