76943-46-9Relevant academic research and scientific papers
Thermal Rearrangements of Cyclic Amine Ylides. III. Intramolecular Cyclization of 2-Ethynylpyridine N-Imides to 3-Azaindolizine Derivatives
Tsuchiya, Takashi,Sashida, Haruki,Konoshita, Ari
, p. 4568 - 4572 (2007/10/02)
Treatment of the N-aminopyridinium salts (5a-e) prepared from 2-ethynylpyridines (4) with potassium carbonate resulted in an intramolecular cyclization to give the corresponding 3-azaindolizines (6) (pyrazolopyridines), presumably via the ionic in
Rearrangement of 2-Ethynylpyridinium N-Imides to Pyrazolopyridines
Tsuchiya, Takashi,Sashida, Haruki
, p. 1109 - 1110 (2007/10/02)
Pyrazolopyridines (6) are obtained from the N-amino-2-ethynylpyridinium salts (5) on treatment with base.
