A Novel Synthesis of 2-Substituted Pyrido-1,3,5-triazin-4-ones by the Reaction of N-Fluoropyridinium Salts with Cyanate Ion and Carbonitriles: Evidence in Support of a Carbene Intermediate

Article abstract of DOI:10.1016/S0040-4039(00)76512-9

A carbene 5" derived from N-fluoropyridinium cation is the suggested intermediate in the novel synthesis of pyridotriazines 3.