Synthesis and structural, spectroscopic, and electrochemical characterization of benzo[c]quinolizinium and its 5-aza-, 6-aza, and 5,6-diaza analogues
Four heterocyclic salts 1a-d were prepared by Ca2+-assisted cyclization of fluoro derivatives 3, and investigated by spectroscopic (NMR and UV), electrochemical, and computational (DFT and MP2) methods. The mechanism for the formation of the ca
Jankowiak, Aleksandra,Obijalska, Emilia,Kaszynski, Piotr,Pieczonka, Adam,Young Jr., Victor G.
experimental part
p. 3317 - 3327
(2011/06/17)
Synthesis and Reactions of Methylbenzoquinolizinium Salts
Six isomers of the methylbenzoquinozilinium salt 3 including four new monomethyl derivatives were synthesized by thermal-intramolecular quaternization of the cis-methyl-substituted 2-pyridines 4 or by the irradiation of trans-4
Kinetic Energy Release and Hammond Postulate During Intramolecular Aromatic Substitution in 2-Stilbazole Ions
In the mass spectra of 2-stilbazoles 1a - 1g and 3- and 4-stilbazoles (2 resp. 3), C13H10N+ ions, m/z = 180, are formed with high intensities by loss of a H-atom or of a substituent.This is the only fragmentation reaction available to metastable molecular