Heteroaromatic compounds are often significant compo- nents of natural compounds and pharmaceuticals.1,2) The cya- nating reaction of heteroaromatic compounds is one of the important organic transformations in organic synthesis, since the cyano group is readily converted into a variety of other functional groups through carboxy groups, amines, etc.3) Therefore, several synthetic methods, both stepwise4,5) and direct6—9) ones have already been ...
