32351-20-5

Upstream product

• 101-68-8 di(4-isocyanatophenyl)methane 
• 81778-99-6 4,4'-bis-(1,2,4-triazolidine-3,5-dione-4-yl)-diphenyl methane 

Downstream Products

• 96025-80-8 4,4'-(Methylendi-4,1-phenylen)-bis<3,5-dioxo-2-(2-oxo-1,2-diphenylethylio)-1,2,4-triazolidin-1-id> 
• 96025-79-5 4,4'-(Methylendi-4,1-phenylen)-bis<3,5-dioxo-2-(2-oxo-1,2-di-p-tolylethylio)-1,2,4-triazolidin-1-id> 
• 99892-48-5 4,4'-Bis<1-(1-ethoxy-2-oxocyclooctyl)-3,5-dioxo-1,2,4-triazolidin-4-yl>diphenylmethan 
• 99892-47-4 4,4'-Bis<1-(1-ethoxy-2-oxocycloheptyl)-3,5-dioxo-1,2,4-triazolidin-4-yl>diphenylmethan 

Relevant academic research and scientific papers

Oxidation of urazoles with 1,3-dihalo-5,5-dimethylhydantoin, both in solution and under solvent-free conditions

1,3-dichloro-5,5-dimethylhydantoin (DCH) and 1,3-dibromo-5,5- dimethylhydantoin (DBH) were used as effective oxidizing agents for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under mild conditions at room temperature with good to excellent yields.

Gelatin-based hydrogels through homobifunctional triazolinediones targeting tyrosine residues

Gelatin is a biopolymer with interesting properties that can be useful for biomaterial design for different applications such as drug delivery systems, or 3D scaffolds for tissue engineering. However, gelatin suffers from poor mechanical stability at phys

URAZOLE COMPOUNDS

The present invention relates to a compound of formula (I) or a stereoisomer, enantiomer, racemic, or tautomer thereof, (I) wherein R1, R2, R3, R4, R5, R6, R7, L1 and Q1 have the meaning defined in the claims and the description. The present invention also relates to a process for the preparation of the compound of formula (I). The present invention also relates to the use of a compound of formula (I) as an in situ precursor of a triazolinedione reagent for the functionalization of enes, dienes, aryl and heteroaryl systems via the ene reactions, Diels-Alder reactions, and electrophilic aromatic substitution reactions of said reagent. The present invention also relates to the use of a compound of formula (I) in polymers, membranes, adhesives, foams, sealants, molded articles, films, extruded articles, fibers, elastomers, polymer based additives, pharmaceutical and biomedical products, varnishes, paints, coatings, inks, composite material, organic LEDs, organic semiconductors, conducting organic polymers, or 3D printed articles. The present invention also relates to article comprising said compound of formula (I) and to a process for reshaping and/or repairing said article.

N2O4 chemisorbed onto n-propylsilica kryptofix 21 and kriptofix 22 as two new functional polymers for the fast oxidation of urazoles and 1,4-dihydropyridines

3-Chloropropylsilica was reacted with Kriptofix 21 or 22 in the presence of triethylamine to form N-propylsilica Kryptofix 21 and Kriptofix 22. Then N 2O4 was added to each of these polymers to chemisorb onto cavity of aza-crown ethers. These functionalized polymers were applied for the fast and simple oxidation of urazoles and 1,4-dihydropyridines, respectively.

Oxidation of urazoles to their corresponding triazolinediones using benzyltriphenylphosphonium nitrate

Benzyltriphenylphosphonium nitrate in the presence of AlCl3 oxidised 1,2,4-triazolidine-3,5-diones to the corresponding 4-substituted-1,2,4- triazole-3,5-diones.

Catalytic oxidation of urazoles and bis-urazoles to their corresponding triazolinediones using aluminium nitrate and a catalytic amount of silica sulfuric acid

A simple and efficient catalytic oxidation of urazoles and a bis-urazole to the corresponding triazolinediones by treatment with Al(NO3) 3.9H2O in the presence of a catalytic amount of silica sulfuric acid is described. A good range of urazole derivatives was selectively oxidized in CH2Cl2 at room temperature in good to excellent yields.

N-bromo reagent mediated oxidation of urazoles to their corresponding triazolinediones under mild and heterogeneous conditions

Various N-bromo reagents [HMTAB, DABCO-bromine, DPTBE, and TBCA] were used as effective oxidizing agents for the oxidation of urazoles and bisurazoles to their corresponding triazolinediones under mild and heterogeneous conditions at room temperature with good to excellent yields. Also the oxidation of some new 4-phenylurazole derivatives with these reagents is discussed.

PEG-N2O4 system as an efficient reagent both for the rapid oxidation of urazoles and 1,4-dihydropyridines under nonaqueous conditions

N2O4 was easily impregnated on polyethyleneglycol to give a stable reagent. Polyethyleneglycol-N2O4 (PEG-N 2O4) system was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones and also for the aromatization of 1,4-dihydropyridines into the corresponding pyridine derivatives under mild conditions at room temperature with good to excellent yields.

Silica-supported ICI as a novel heterogeneous system for the rapid oxidation of urazoles to triazolinediones

ICl-SiO2 as a new reactive system was prepared by the treatment of iodine monochloride with an activated silica gel in chloroform. ICl-SiO 2 in a heterogeneous system efficiently oxidized urazoles to the corresponding triazolinediones under mild conditions in high yields at room temperature.