Synthetic routes to fluorenone, indenopyirdine, 4h-naphtho[2,1-b]pyrans and pyridine derivatives.
alpha,beta-unsaturated nitriles 1 reacted with compounds 3,4 and 5 to give the fluorenones 8, 4H-naphthopyrans 9 and the pyridines 11 respectively. Reaction of 3a with benzaldehyde in NH4OH afforded the indenopyridine 14. Reaction of 3a with 1-aryl-2-nitoethene 15 afforded the fluorenone 17. Condensation of 2-arylideneindane-1,3-diones 18 with beta-aminocrotononitrile 19 gave the indenopyridines 20.
el-Taweel
F M
FM
Sofan
M A
MA
el-Maati
T M
TM
Elagamey
A A
AA
D005449:Fluorenes / Q000138:chemical synthesis*; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009281:Naphthalenes / Q000138:chemical synthesis*; D011714:Pyrans / Q000138:chemical synthesis*; D011725:Pyridines / Q000138:chemical synthesis*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D005449:Fluorenes; D007202:Indicators and Reagents; D009281:Naphthalenes; D011714:Pyrans; D011725:Pyridines