title: Arylbenzo[h][1, 6]naphthyridine derivatives: synthesis and photophysical properties.
abstract: Suzuki-Miyaura cross coupling was successfully used for C5-arylation in 4-amino-2-chloroquinoline-3-carbaldehyde using arylbornic acid and tetrakistriphenylphosphine palladium catalyst in water. Friedländer condensation reaction on 4-amino-2-chloro/2-arylquinoline-3-carbaldehyde and aromatic ketones gave novel aryl and diarylbenzo[h] [1, 6]naphthyridines in good yields. Fluorescence quantum yields were increased by introducing C2 and C5 π donor aryl benzo[h][1, 6]naphthyridines derivatives.
authors.affiliation: Organic Chemistry Research Center, Department of Chemistry, K. R. T. Arts, B. H., Commerce and A. M. Science College, Gangapur Road, Nashik 422002 MS, India. raghunath_toche@rediffmail.com
authors.forename: Raghunath B
authors.initials: RB
authors.lastname: Toche
authors.forename: Ravindra A
authors.initials: RA
authors.lastname: Janrao
authors.forename: Sandeep M
authors.initials: SM
authors.lastname: Bagul
authors.forename: Shivaraj P
authors.initials: SP
authors.lastname: Patil
authors.forename: Balasaheb P
authors.initials: BP
authors.lastname: Pagar
authors.forename: Prashant S
authors.initials: PS
authors.lastname: Nikam
mesh_terms: D005453:Fluorescence; D015394:Molecular Structure; D009287:Naphthyridines / Q000138:chemical synthesis* / Q000737:chemistry*; D055668:Photochemical Processes; D011789:Quantum Theory
chemical_list: D009287:Naphthyridines