188-87-4Relevant academic research and scientific papers
Oxidative Electrocyclization of Diradicaloids: C-C Bonds for Free or How to Use Biradical Character for π-Extension
Feofanov, Mikhail,Akhmetov, Vladimir,Sharapa, Dmitry I.,Amsharov, Konstantin
supporting information, p. 5741 - 5745 (2020/07/03)
Herein, we show that biradical character and appropriate distribution of spin density can be used for synthetic purposes. We demonstrate the rational domino annulation that includes dehydrative π-extension (DPEX) as the initiation step and subsequent oxid
Synthesis and Physical Properties of Azapolycyclic Hydrocarbons. Part 1. Preparation of 1-Azabenzanthrone and its Condensation Products and their Structural Determination
Iwashima, Satoshi,Ueda, Toyotoshi,Honda, Hitoshi,Tsujioka, Toshitsugu,Ohno, Mitsuru,et al.
, p. 2177 - 2187 (2007/10/02)
Preparation of 1-azabenzanthrone (27) was carried out by making use of a German Patent reaction.An improved procedure gave (27) easily and rapidly.Compound (27) underwent self-condensation via a zinc-catalysed method or an alkali-fusion procedure.The zinc-catalysed condensation product was separated into four isomers; 3,12-diazatetrabenzoperylene (7), 3,15-diazabenzophenanthropentaphene (4), 5,17-diazadibenzonaphthopentaphene (3), and 5,10-diazabenzophenalenopentaphene (6).The major component was (3).The reduced product after alkali-fusion condensation of (27) was separated into four isomers; (7), (3), (6), and 5,14-diazadinaphthoperylene (2).The major component was (2).The structures of the isomers were assigned from their oxidation products, m.p., u.v.-visible, i.r., and mass spectra.According to our assignments, (6) and possibly 5,14-diazatetrabenzoperylene (10) are new structural isomers of fused nanocyclic compounds whose parent aromatic hydrocarbons have not been prepared, though (10) has not actually been isolated.
