95631-01-9Relevant academic research and scientific papers
Nitrogen Bridgehead Compounds. Part 45. Synthesis of 6-Arylhydrazono-6,7,8,9-tetrahydro-11H-pyridoquinazolin-11-ones
Koekoesi, Jozsef,Hermecz, Istvan,Podanyi, Benjamin,Szasz, Gyoergy,Meszaros, Zoltan
, p. 1301 - 1306 (2007/10/02)
A series of 6-arylhydrazono-6,7,8,9-tetrahydro-11H-pyridoquinazolin-11-ones 3-37, convenient starting materials for indolopyridoquinazolines, were prepared by diazonium coupling between aryldiazonium chlorides and 6,7,8,9-tetrahydro- 2, 6-formyl-6,7,8,9-tetrahydro- 39, 6-(dimethylamino)methylene-6,7,8,9- 38 or 6-carboxyl-6,7,8,9-tetrahydro-11H-pyridoquinazolin-11-ones 43.The arylhydrazono derivatives were also prepared from 6-bromo- 45 or 6,6-dibromo-6,7,8,9-tetrahydro-11H-pyridoquinazolines 46 with arylhydrazines.The structures of the 6-arylhydrazonopyridoquinazolines were characterized by uv and 1H nmr spectroscopy.The 6-arylhydrazono derivatives show a solvent-dependent E-Z isomerism.
