712308-51-5

Upstream product

• 859300-01-9 3-(2,4-dinitro-phenyl)-4-hydroxy-4-methyl-3,4-dihydro-2H-phthalazin-1-one 
• 856804-63-2 [2-(2,4-dinitro-phenyl)-4-oxo-1,2,3,4-tetrahydro-phthalazin-1-yl]-acetic acid 
• 577-56-0 2-acetyl-benzoic acid 
• 119-26-6 (2,4-dinitro-phenyl)-hydrazine 
• 304648-92-8 2-[1-(2,4-dinitro-phenylhydrazono)-ethyl]-benzoic acid 

Relevant academic research and scientific papers

Benzo[4,5]imidazo[2,1-a]phthalazines: I. Substituted o- nitrophenylhydrazines in the synthesis of phthalazin-1(2H)-ones

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

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