96207-01-1Relevant academic research and scientific papers
Thermal Rearrangements of Cyclic Amine Ylides. VIII. Intramolecular Cyclization of 2-Ethynylpyridine N-Ylides into Indolizines and Cyclazines
Sashida, Haruki,Kato, Masanobu,Tsuchiya, Takashi
, p. 3826 - 3832 (2007/10/02)
Treatment of 6-unsubstituted 2-ethynyl-1-phenacylpyridinium bromides (10a-c) with 1,5-diazabicycloundec-5-ene in refluxing benzene resulted in cyclization to give the 3-benzoyl-indolizines (11) via the N-ylide intermediates 13, whereas heating the
THERMAL INTRAMOLECULAR CYCLIZATION OF 2-ETHYNYLPYRIDINE N-YLIDES TO INDOLIZINES AND CYCLAZINES
Tsuchiya, Takashi,Kato, Masanobu,Sashida, Haruki
, p. 4666 - 4669 (2007/10/02)
Treatment of 2-ethynyl-1-phenacylpyridinium bromides (1a-c), prepared from 2-ethynylpyridines and phenacyl bromide, with a base, DBU, in refluxing benzene gave 3-benzoylindolizines (2), whereas heating the salts (1) in refluxing acetic acid afforded 1-ben
