109152-75-2Relevant academic research and scientific papers
Pyrolysis Products of Some Pyrazolinodiazepines: Homodiazepines and Pyrazolopyridines
Klinger, Francois,Foulon, Michel,Gesche, Paul,Strub, Henri,Streith, Jacques
, p. 1783 - 1790 (2007/10/02)
Pyrolysis at 150 deg C of the 1-pyrazolinodiazepines 1a, b, 3a, and 3c gave mainly the expected homodiazepines 4a-c with a high reaction rate.Pyrolysis of the 2-pyrazolinodiazepines 2b-d required higher temperatures (170-180 deg C) and longer reaction times leading to the formation of tarry residues.From these homodiazepines 4b-d and pyrazolopyridines 8b, c, 9b, c and 10b, c could be isolated in moderate to poor yields only.Rather unexpected trace amounts of the bicyclic methylenecyclopropane derivative 11 were isolated from the pyrolysis of 2d, besides the expected isomeric homodiazepine 4d.
