1201003-60-2Relevant academic research and scientific papers
Synthesis of pyridines and pyrazines using an intramolecular hydroamination-based reaction sequence
Rizk, Toni,Bilodeau, Eric J.-F.,Beauchemin, Andre M.
supporting information; experimental part, p. 8325 - 8327 (2010/01/16)
A management issue! Various pyridines and pyrazines can be efficiently accessed from simple acyclic precursors using an intramolecular hydroamination/isomerization/aromatization sequence (see scheme). ρ-Toluenesulfonic acid (2 mol%) is used to catalyze this novel alkyne annulation, in which the oxime group allows for a subsequent redoxneutral aromatization step to occur.
