title: Synthesis of Ethano-Bridged Diazapolycenes as Potential Precursors for Diazapolycenes and Their Properties.
abstract: A series of ethanodiazapolycenes were prepared in 87%-89% yields by Friedländer reactions of three o-aminoarenecarbaldehydes with bicyclo[2.2.2]octane-2,5-dione and their spectral, thermal, and structural properties were studied. Subsequent attempts to convert them to diazapolycenes have proved unsuccessful.
authors.affiliation: Department of Pharmacy, College of Pharmacy, Yeungnam University, Gyeongsan 38541, Korea. mukulnmr@gmail.com.
authors.forename: Moinul
authors.initials: M
authors.lastname: Karim
authors.affiliation: Department of Pharmacy, College of Pharmacy, Yeungnam University, Gyeongsan 38541, Korea. ydjahng@ynu.ac.kr.
authors.forename: Yurngdong
authors.initials: Y
authors.lastname: Jahng
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009279:Naphthacenes / Q000138:chemical synthesis* / Q000737:chemistry; D011810:Quinoxalines / Q000138:chemical synthesis* / Q000737:chemistry; D012666:Semiconductors
chemical_list: D009279:Naphthacenes; D011810:Quinoxalines; C044647:azapentacene; C523499:pentacene
keywords: 6,13-dihydro-6,13-ethano-5,12-diazapentacene; 7,16-dihydro-7,16-ethano-6,15-diazaheptacene; 8,19-dihydro-8,19-ethano-7,18-diazanonacene; azapentacene; diazapolycene