3682-15-3

Usage

Uses

Used in Chemical Synthesis:
3-Nitrophthalhydrazide is used as a key intermediate in the synthesis of various chemical compounds. It is particularly utilized in the preparation of 3-aminophthalhydrazidate, which is essential for the synthesis of monoacylhydrazidate-coordinated Mn2+ and Pb2+ compounds. These synthesized compounds have potential applications in various fields, such as catalysis, material science, and pharmaceuticals.
Used in Photography and Imaging Industry:
In the field of photography and imaging, 3-Nitrophthalhydrazide is used as a heat developable light-sensitive material. Its light-sensitive properties make it a valuable component in the development of photographic films and papers, as well as in other imaging technologies that require heat-sensitive materials for processing.
These applications highlight the versatility of 3-Nitrophhydrazide in both chemical synthesis and specialized industries, such as photography and imaging. Its unique chemical properties and reactivity contribute to its usefulness in these areas.

InChI:InChI=1/C8H5N3O4/c12-7-4-2-1-3-5(11(14)15)6(4)8(13)10-9-7/h1-3H,(H,9,12)(H,10,13)

Upstream product

• 641-70-3 3-nitrophthalic acid anhydride 
• 603-11-2 3-nitrophthalic acid 
• 603-62-3 4-nitro-1H-isoindole-1,3(2H)-dione 
• 7732-18-5 water 
• 86-57-7 1-Nitronaphthalene 
• 24564-71-4 3-Nitrophthaloyl dichloride 
• 88-99-3 benzene-1,2-dicarboxylic acid 
• 7803-57-8 hydrazine hydrate 
• 64-19-7 acetic acid 

Downstream Products

• 521-31-3 5-amino-2,3-dihydrophthalazine-1,4-dione 
• 60851-83-4 5-aminophthalazine-1,4-dione 

Relevant academic research and scientific papers

Efficient ZrO(NO3)2.2H2O Catalyzed Synthesis of 1 H -Indazolo[1,2- b ] phthalazine-1,6,11(13 H)-triones and Electronic Properties Analyses, Vibrational Frequencies, NMR Chemical Shift Analysis, MEP: A DFT Study

The synthesis of 1H-indazolo[1,2-b]phthalazine-1,6,11(13H)-trione derivatives, using one-pot three-component condensation reaction of 3-nitrophthalic anhydride, hydrazine monohydrate, dimedone, and aromatic aldehydes in the presence of ZrO(NO3)2.2H2O as the novel catalyst and in reflux conditions in EtOH was reported. Quantum theoretical calculations for three structures of compounds (5a, 5b, and 5c) were performed using the Hartree-Fock (HF) and density functional theory (DFT). From the optimized structure, geometric parameters were obtained and experimental measurements were compared with the calculated data. The structures of the products were confirmed by IR, 1H NMR, 13C NMR, mass spectra, and elemental analyses. The IR spectra data and 1H NMR and 13C NMR chemical shift computations of the 1H-indazolo[1,2-b]phthalazine-1,6,11(13H)-trione derivatives in the ground state were calculated. Frontier molecular orbitals (FMOs), total density of states (DOS), thermodynamic parameters, and molecular electrostatic potential (MEP) of the title compounds were investigated by theoretical calculations. Molecular properties such as the ionization potential (I), electron affinity (A), chemical hardness (η), electronic chemical potential (μ), and electrophilicity (ω) were investigated for the structures. Thus, there was an excellent agreement between experimental and theoretical results.

Synthesis and evaluation of in vitro and in vivo trypanocidal properties of a new imidazole-containing nitrophthalazine derivative

A series of new phthalazine derivatives (1-4) containing imidazole rings and functionalized with nitro groups in the benzene ring of the phthalazine moiety were prepared and identified on the basis of their MS, elemental analyses and bidimensional 1H and 13C NMR data, and their trypanocidal activity was tested. The 8-nitrosubstituted compound (3) was more active in vitro against Trypanosoma cruzi and less toxic against Vero cells than the reference drug benznidazole, and showed a SI value that was 47-fold better than the reference drug in amastigote forms. It also remarkably reduced the infectivity rate in Vero cells and decreased the reactivation of parasitemia in immunodeficient mice. Ultrastructural alterations found in epimastigotes treated with 3 confirmed extensive cytoplasm destruction in the parasites, whereas histopathological analysis of the hearts of mice infected and treated with 3 resulted in a decrease in cardiac damage. Biochemical markers showed that livers, hearts, and kidneys of treated mice were substantially unaffected by the administration of 3, despite the presence of the potentially toxic nitro group. It was also found that this compound selectively inhibited the antioxidant parasite enzyme Fe-superoxide dismutase (Fe-SOD) in comparison with human CuZn-SOD, and molecular modeling suggested interaction with the H-bonding system of the iron-based moiety as a feasible mechanism of action against the enzyme.

Luminol or isoluminol synthesizing method by one-pot process

The invention discloses a luminol or isoluminol synthesizing method by a one-pot process. The luminol or the isoluminol synthesizing method by the one-pot process includes the steps of 1) enabling 3-nitrophthalic acid or 4-nitrophthalic acid as a starting material to react with urea in an organic solvent to obtain 3-nitrophthalimide or 4-nitrophthalimide; 2) enabling the 3-nitrophthalimide or the 4-nitrophthalimide to react with a hydrazine hydrate aqueous solution to obtain 3-nitrophthalhydrazide or 4-nitrophthalhydrazide; 3) enabling the 3-nitrophthalhydrazide or the 4-nitrophthalhydrazide to react with a reducing agent in the presence of a catalyst to obtain luminol or isoluminol. The luminol or the isoluminol synthesizing method by the one-pot process has the advantages of simplicity, convenience in operation, low cost, high yield and less pollution, and can be applicable to industrialized production.

PHARMACEUTICAL GRADE PHTHALAZINEDIONES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

The present invention comprises methods of manufacturing a highly purified, pharmaceutical grade phthalazinedione for administration to a human or animal. The manufacturing methods identify and isolate starting materials, and prepare intermediate products, which are suitable for the commercial batch process production of highly purified and high-yielding intermediate products and final phthalazinedione products.

CRYSTALLINE FORMS FOR 5-AMINO-2, 3-DIHYDROPHTHALAZINE-1, 4-DIONE SODIUM SALT, PHARMACEUTICAL PREPARATIONS CONTAINING THE SAME AND METHOD FOR THE PRODUCTION OF SAID FORMS

The invention relates to the provision of two novel crystalline forms I and II for 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt. Surprisingly, it was discovered that form I and form II have differing immunological effects. This advantageous property is useful for immunospecific applications. In addition, both forms have advantageous physicochemical properties, which are useful in the production, further processing and/or use of a pharmaceutical preparation of form I or form II or a mixture of both.

Hydrazine-hydroquinone complex as an efficient solid phase hydrazine donor: High yield synthesis of luminol and isoluminol

Isomeric aminophthalhydrazides, luminol and isoluminol were easily obtained from the corresponding aminoph-thalimides by solid phase hydrazinolysis with the hydrazine-hydroquinone complex in high yields. Synthesis of a novel chemiluminescent agent, a heterocyclic analogue of isoluminol related to aminoimidazolecarboxamide, is also described.

NEW METHOD FOR OBTAINING 5-AMINO 2,3-DIHYDROPHTHALAZINE-1,4-DIONE ALKALI METAL SALTS AND THEIR USE IN MEDICINE

The invention is related to a method for preparing 5-amino-2,3-dihydrophthalazine-1,4-dione salt with alkali metals of the formula II wherein 5-nitro-2,3-dihydrophthalazine-1,4-dione is solved in water solution of MOH1 where M has the below mentioned meaning, with formation of solution of 5-nitro-2,3-dihydrophthalazine-1,4-dione alkali metal salt, which is catalytically transformed into 5-amino-2,3-dihydrophthalazine-1,4-dione salt at the temperature 40-900C by means of hydrogen under the pressure 1-4 MPa in at the presence of a transition metal catalyst (Pt, Pd) on activated carbon, and separation of crystalline 5-amino-2,3-dihydrophthalazine-1,4-dione salt is performed by water solution diluting with lower alcohol or cyclic lower ether with cooling to the temperature ?5° C. to ?15° C., providing that there is used 5-nitro-2,3-dihydrophthalazine-1,4-dione formed in the reaction of anhydride of 3-nitrophthalic acid with hydrazine hydrate in anhydrous acetic acid at the temperature 100-110° C. with distilling the mixture of acetic acid and water off. There was also presented a pharmaceutical composition containing such obtained 5-amino-2,3-dihydrophthalazine-1,4-dione salt with alkali metals and its application in medicine. There was also presented new use of 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt for production of a drug for treatment of heart diseases, pancreas diseases and diabetes as well as application of sodium salt optionally in combination with lithium salt for treatment of the nervous system diseases. Besides, the methods of treatment of these diseases were also presented. Formula II where M represents Li, Na, K

NEW METHOD FOR OBTAINING 5-AMINO-2,3-DIHYDROPHTHALAZINE-1,4-DIONE ALKALI METAL SALTS AND THEIR USE IN MEDICINE

The invention is related to a method for preparing 5-amino-2,3-dihydrophthalazine-1,4-dione salt with alkali metals of the formula Il wherein 5-nitro-2,3- dihydrophthalazine-1,4-dione is solved in water solution of MOH1 where M has the below mentioned meaning, with formation of solution of 5-nitro-2,3-dihydrophthalazine- 1,4-dione alkali metal salt, which is catalytically transformed into 5-amino-2,3-dihydrophthalazine-1,4-dione salt at the temperature 40-900C by means of hydrogen under the pressure 1-4 MPa in at the presence of a transition metal catalyst (Pt, Pd) on activated carbon, and separation of crystalline 5-amino-2,3-dihydrophthalazine-1,4-dione salt is performed by water solution diluting with lower alcohol or cyclic lower ether with cooling to the temperature -5°C to -15°C, providing that there is used 5-nitro-2,3-dihydrophthalazine-1,4-dione formed in the reaction of anhydride of 3-nitrophthalic acid with hydrazine hydrate in anhydrous acetic acid at the temperature 100-110°C with distilling the mixture of acetic acid and water off. There was also presented a pharmaceutical composition containing such obtained 5-amino-2,3-dihydrophthalazine-1,4-dione salt with alkali metals and its application in medicine. There was also presented new use of 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt for production of a drug for treatment of heart diseases, pancreas diseases and diabetes as well as application of sodium salt optionally in combination with lithium salt for treatment of the nervous system diseases. Besides, the methods of treatment of these diseases were also presented. Formula II where M represents Li, Na, K

HYDRAZIDES AND DERIVATIVES PRODUCTION PROCESS FROM HYDRAZINES AND DICARBOXYLIC ACIDS

The present invention describes a process to form hydrazides from the reaction of a hydrazine and a dicarboxylic, using a Lewis acid as a main reagent of the reaction. The reaction occurs in a safe reactional environment, utilizing smooth conditions, neither involving high temperatures nor high pressures, producing the desired products with high yields, between 90-95%. The invention also describes a kit for utilization of chemiluminescent substances, comprised of two solutions.