642429-76-3Relevant academic research and scientific papers
Synthesis of benzo[4,5]imidazo[2,1-a]phthalazines
Shubin, Kirill M.,Kuznetsov, Viktor A.,Galishev, Vladimir A.
, p. 1407 - 1408 (2004)
5,9-Disubstituted benzo[4,5]imidazo[2,1-a]phthalazines are synthesized efficiently from acylbenzoic acids and 2-nitro-5-chlorophenylhydrazine. Nucleophilic substitution in phthalazinones gave a variety of the title compounds after reduction and cyclizatio
Benzo[4,5]imidazo[2,1-a]phthalazines: I. Substituted o- nitrophenylhydrazines in the synthesis of phthalazin-1(2H)-ones
Kuznetsov,Shubin,Shchipalkin,Teplyakov,Petrov
experimental part, p. 731 - 735 (2009/04/07)
Efficient cyclization procedure was developed for 2-nitro-, 2,4-dinitro-, 2-nitro-5-chloro-, and 4,5-dichloro-2-nitrophenylhydrazines with 2-acylbenzoic acids by heating the reagents in a mixture of of concentrated sulfuric acid and ethanol. A series of n
Efficient route to benzo[4,5]imidazo[2,1-a]phthalazines
Kuznetsov, Viktor A.,Shubin, Kirill M.,Schipalkin, Andrej A.,Petrov, Mikhail L.
, p. 10018 - 10030 (2007/10/03)
Benzo[4,5]imidazo[2,1-a]phthalazines have been obtained from various o-nitrophenylhydrazines through different 2-(2-nitrophenyl)-1,2-dihydro-1-phthalazinones as intermediates using an elaborated advanced procedure. An activated chlorine atom in 2-nitrophe
