1756-90-7

Upstream product

• 2524-52-9 ethyl-2-picolinate 
• 70-11-1 α-bromoacetophenone 

Downstream Products

• 132396-10-2 1-Methoxy-3-phenyl-pyrido[1,2-a]pyrazin-5-ylium; iodide 
• 132396-09-9 2-Methyl-1-oxo-3-phenyl-1,2-dihydro-pyrido[1,2-a]pyrazin-5-ylium; iodide 
• 132396-45-3 1-Methylthio-3-phenylpyrido<1,2-a>pyrazinium hexafluorophosphate 
• 132396-17-9 1-Methylthio-3-phenylpyrido<1,2-a>pyrazinium iodide 
• 132396-05-5 3-Phenylpyrido<1,2-a>pyrazinium-1-thiolate 
• 132396-31-7 C₁₅H₁₃N₂O⁽¹⁺⁾*F₆P^(1-) 
• 132396-29-3 C₁₅H₁₃N₂O⁽¹⁺⁾*F₆P^(1-) 

Relevant academic research and scientific papers

Synthesis and Regiospecificity in Methylation of Pyridopyrazinium-1- and 3-olates and Pyridopyridazinium-2- and 4-olates

New methods have been developed for the synthesis of pyridopyrazinium-1- and 3-olates 5a-f, 9 and 1-thiolate 24 as well as of pyridopyridazinium-4- and 2-olates 14, 20.The methylation of these new compounds was studied by soft and hard methylating agents.Depending on the nature of the reagent used, the pyridopyrazinium-1-olates 5a-f gave NMe 22a-f and/or OMe 23a-f products, whereas the 3-olate 9 and both the 4- and 2-pyridazinium-olates 14, 20 afforded solely OMe compounds 10,15, 21.A selectivity rule for methylation is proposed.