Lateral Deprotometallation‐Trapping Reactions on Methylated Pyridines, Quinolines and Quinoxalines Using Lithium Diethylamide
作者:Mohamed Hasyeoui、Peter M. Chapple、Frédéric Lassagne、Thierry Roisnel、Marie Cordier、Ali Samarat、Yann Sarazin、Florence Mongin
DOI:10.1002/ejoc.202300555
日期:2023.9.14
The behavior of methylated heterocycles (picolines, 2,4-lutidine, methylquinolines and 2-methylquinoxaline) in deprotometallation-trapping sequences using lithium diethylamide was studied.
New mono-(5a-t, w) and biphotochromic (5u, v) 9'-styrylquinolinespirodihydroindolizines (DHIs) with IR-absorbing colored forms (4) were prepared. The conformation and configuration of these new DHIs were investigated by NMR studies and the structure was proved by x-ray analysis. The kinetics of the fast cyclizing process of betaine 4 to DI-II 5 takes place in the millisecond range and were studied by flash photolysis. The absorption bands of the betaines 4 were recorded at low temperature by FT-UV/VIS/near-IR spectroscopy. Large solvent effects on the absorption maxima of betaines 4 were observed. Copyright (C) 2000 John Wiley & Sons, Ltd.
Mathes; Sauermilch, Chemische Berichte, 1954, vol. 87, p. 1179,1183
作者:Mathes、Sauermilch
DOI:——
日期:——
Condensation Reactions of Cinchoninaldehyde and Quinaldaldehyde<sup>1</sup>
作者:Harry Kaplan、H. G. Lindwall
DOI:10.1021/ja01245a043
日期:1943.5
Rehorek, Detlef; Baezold, Dietmar; Janzen, Edward G., Zeitschrift fur Chemie, 1985, vol. 25, # 1, p. 27 - 28
作者:Rehorek, Detlef、Baezold, Dietmar、Janzen, Edward G.