Henk'C. van der Plas,* Valery N. Charushin,* and Beb van Veldhuizen Laboratory of Organic Chemistry, Agricultural University, Wageningen, The Netherlands Received August 2, 1982 ... The reactivity of azines toward potassium amide or liquid ammonia to form anionic u complexes or neutral u adducts has been the subject of numerous publications.2 Highly electrophilic azines such as pteridine^,^ tetrazines; or quaternary pyrimidinium were found to react with liquid ...