title: Synthesis and fluorescence properties of donor-acceptor-substituted novel dipyrazolo[3,4-b:3',4'-d]pyridines (DPP).
abstract: A rapid and efficient method for the synthesis of novel dipyrazolo[3,4-b:3',4'-d]pyridines (DPP) from pyrazolo[3,4-b]pyridine was successfully developed. The DPP derivative was further N-alkylated (6, 8) as well as N-linked with amino acids (13) and their photophysical properties were studied along with N-aryl DPP 4 and observed that the chromophores at C(4) position in the aryl ring changed the absorption and emission lambda(max).
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. mn_jachak@hotmail.com
authors.forename: Madhukar N
authors.initials: MN
authors.lastname: Jachak
authors.forename: Sandeep M
authors.initials: SM
authors.lastname: Bagul
authors.forename: Dilip R
authors.initials: DR
authors.lastname: Birari
authors.forename: Maruti G
authors.initials: MG
authors.lastname: Ghagare
authors.forename: Muddassar A
authors.initials: MA
authors.lastname: Kazi
authors.forename: Raghunath B
authors.initials: RB
authors.lastname: Toche
authors.forename: Vijayavitthal T
authors.initials: VT
authors.lastname: Mathad
mesh_terms: D000042:Absorption; D005453:Fluorescence; D011725:Pyridines / Q000138:chemical synthesis* / Q000737:chemistry / Q000378:metabolism*
chemical_list: D011725:Pyridines; C023666:pyridine