107471-17-0Relevant academic research and scientific papers
Novel Synthesis of Pyrido-as-Triazinium System and its Zwitterionic Derivatives. Different Reactivities of 1- and 3-Olates with Electrophiles
Batori, S.,Juhasz-Riedl, Zs.,Sandor, P.,Messmer, A.
, p. 375 - 380 (2007/10/02)
A novel convenient synthesis of the title system has been developed using α-carbonyl derivatives of N-aminopyridine and formamide (and its substituted derivatives) in the presence of phosphorus oxychloride or boron trifluoride.Qauternization of zwitterionic 1- and 3-olates (4a, 4b; 11) with soft and hard methylating agents has been studied.Mechanistic suggestion are given to explain the formation of the different (solely N-Me; N-Me and O-Me; solely O-Me) products.
