Synthesis of 3-Aryl(pyridin-4-yl)-1-(4-R-phenyl)-5-phenyl-5,6-dihydro-1,2,4,5-tetrazinium Triflates and 6-Aryl(pyridin-4-yl)-4-phenyl-2-(4-R-phenyl)-1,2,3,4-tetrahydro-1,2,4,5-tetrazinyls
摘要:
Abstract The corresponding formazans were synthesized by the reaction of phenylhydrazones of nitro-substituted benzaldehydes and 4-pyridinecarbaldehyde with arenediazonium salts obtained from p-substituted anilines. Formazans were converted into the corresponding 5,6-dihydro-1,2,4,5-tetrazinium triflates by the action of formalin in the presence of CF3SO3H. When tetrazinium salts were treated with