3203-02-9

Upstream product

• 95-54-5 1,2-diamino-benzene 
• 1620-98-0 3,5-di-t-butyl-4-hydroxybenzaldehyde 
• 128-37-0 2,6-di-tert-butyl-4-methyl-phenol 
• 88-74-4 2-nitro-aniline 
• 84654-55-7 3,5-di(tert-butyl)-4-hydroxybenzoic ethyl acid imino ester hydrochloride 

Relevant academic research and scientific papers

Synthesis and antioxidant properties of benzimidazole derivatives with isobornylphenol fragments

A series of new 2-substituted-1H-benzimidazoles was synthesized on the basis of 4-hydroxybenzaldehydes. Their antioxidant properties were evaluated in the in vitro models and compared with those of known analogs. The structural specifi c features of the m

Highly stabilized phenoxyl radicals with hydrogen-bonding capability

The syntheses of 4-(1H-benzimidazol-2-yl)-2,6-di-tert-butyl-phenoxyl and 4-(1H-5-6-dimethyl-benzimidazol-2-yl)-2,6-di-tert-butyl-phenoxyl radicals (1- 2) by oxidation of the corresponding phenols is described. The radicals are stable enough to retain colo

Redox-neutral iron-sulfur promoted transformation of 2-nitrophenols and 2,6-disubstituted p -cresols into 2-arylbenzoxazoles

A catalyst based on iron and elemental sulfur has been shown to efficiently promote a redox-neutral reaction between 2-nitrophenols and 2,6-disubstituted p-cresols, allowing for the preparation of 2-arylbenzoxazoles in good yields. This synthetic methodology also affords high atom economy without the use of any external oxidizing and/or reducing reagents. This is the first redox-condensation reaction of 2-nitrophenols with 2,6-disubstituted p-cresols. Georg Thieme Verlag Stuttgart New York.

A bioinspired construct that mimics the proton coupled electron transfer between P680?+ and the Tyrz-his190 pair of photosystem II

A bioinspired hybrid system, composed of colloidal TiO2 nanoparticles surface modified with a photochemically active mimic of the PSII chlorophyll-Tyr-His complex, undergoes photoinduced stepwise electron transfer coupled to proton motion at the phenolic site. Low temperature electron paramagnetic resonance studies reveal that injected electrons are localized on TiO2 nanoparticles following photoexcitation. At 80 K, 95% of the resulting holes are localized on the phenol moiety and 5% are localized on the porphyrin. At 4.2 K, 52% of the holes remain trapped on the porphyrin. The anisotropic coupling tensors of the phenoxyl radical are resolved in the photoinduced D-band EPR spectra and are in good agreement with previously reported g-tensors of tyrosine radicals in photosystem II. The observed temperature dependence of the charge shift is attributed to restricted nuclear motion at low temperature and is reminiscent of the observation of a trapped high-energy state in the natural system. Electrochemical studies show that the phenoxyl/phenol couple of the model system is chemically reversible and thermodynamically capable of water oxidation. Copyright

Chemistry of 2-substituted benzimidazoles. 1. 5-Amino-2-methyl(aryl, arylalkyl, pyridyl)benzimidazoles

A series of 2-substituted benzimidazoles was synthesized. These products were consecutively converted into 5-nitro- and 5-amino-2-substituted benzimidazoles.

SYNTHESIS AND PROPERTIES OF AZOLES AND THEIR DERIVATIVES. 35. SYNTHESIS OF CERTAIN AZOLES CONTAINING STERICALLY HINDERED PHENOL RESIDUES

The condensation of hydrochlorides of ethyl iminoesters of 4-hydroxy-3,5-di-tert-butylbenzoic and β-(4-hydroxy-3,5-di-tert-butylphenyl)propionic acids with monoethanolamine, o-aminophenol, and o-phenylenediamine was studied.As a result, Δ2-oxaz

Studies on the synthesis and anti-inflammatory activity of 2,6-Di-tert-butylphenols with a heterocyclic group at the 4-position I

A number of 2,6-di-tert-butylphenols with a heterocyclic group at the 4-position were prepared. The heterocyclic groups were as follows: benzoxazole, benzothiazole, benzimidazole, indole, imidazo[1,2-a]pyridine and imidazo[1,2-a]pyrimidine. Anti-inflammat