1435-88-7

Usage

Purification Methods

Crystallise the phenol from hexane. [Beilstein 16 II 61, 16 IV 195.]

InChI:InChI=1/C13H12N2O/c1-10-9-12(16)7-8-13(10)15-14-11-5-3-2-4-6-11/h2-9,14H,1H3/b15-13-

Upstream product

• 369-57-3 benzenediazonium tetrafluoroborate 
• 108-39-4 3-methyl-phenol 
• 2684-02-8 benzenediazonium 
• 100-34-5 benzene diazonium chloride 
• 34810-71-4 N-[(2-methylphenyl)imino]benzenimine oxide 
• 62-53-3 aniline 

Downstream Products

• 2835-99-6 4-amino-3-methylphenol 
• 1435-61-6 3-Methyl-4-(4-nitro-phenylazo)-phenol 

Relevant academic research and scientific papers

Synthesis of diaryl-azo derivatives as potential antifungal agents

As compared with a commercially available agricultural fungicide hymexazol, some phenyl-azo phenol derivatives (e.g., 4a, 4b, 4f, 4n, 4q, 4u, and 4v) exhibited the more promising and pronounced antifungal activities in vitro against seven phytopathogenic fungi. It seemed that 4-((un)substituted phenylazo)-phenol and 4-((un)substituted phenylazo)-3-methylphenol might be considered as new lead structures for further design of agricultural fungicides.

MECHANISM OF AZO COUPLING. VI. REACTIONS OF THE p-NITROBENZENEDIAZONIUM ION WITH (PHENYLAZO)PHENOL AND ITS DERIVATIVES

According to the results of elemental analysis, high-performance liquid chromatography, and NMR, UV, and IR spectroscopy the preparatively isolated products of the reactions of the p-nitrobenzenediazonium ion with p-(phenylazo)phenol and its derivatives are derivatives of 4,4-bis(p-nitrophenylazo)-2,5-cyclohexadien-1-one.The products are stable in the solid state and in neutral media.In acid and alkaline media they are split with the formation of the nitrobenzenediazonium ion and the corresponding p-(phenylazo)phenols.The product with a cyclohexadienone structure is regarded as a model of the second of the two successively formed intermediate complexes in the azo coupling.

SYNTHESIS OF AZOXYBENZENE-SbCl5 COMPLEXES AND THEIR SELECTIVE ORTHO-WALLACH REARRANGEMENT

When an equimolar solution of various azoxybenzenes and SbCl5 in carbon tetrachloride were mixed, a 1:1 complex immediately deposited as orange crystals in high yield.The thermal reaction of these complexes in inert solvents gives o-hydroxy-azobenzene selectively.On the contrary, other Lewis acids, such as TiCl4, AlCl3, FeCl3 and ZnBr2 failed to give an isolatable complex with azoxybenzene, and their direct thermal reaction with azoxybenzene resulted in deoxygenation to yield azobenzene as a main product.

Insecticide evaporator comprising a stabilizer

Insecticide evaporator comprising at least one volatile phosphoric ester insecticide, an agent for stabilizing the said ester against decomposition by protonization and used in an amount of 0.2 to 20% based on the weight of phosphoric ester, characterized in that the stabilizing agent contains at least one compound selected from the compounds of the chemical class of 1,3-benzodioxoles and at least one diazene.

Evaporator system comprising a stabilized pesticidal phosphoric acid ester and method for stabilizing such ester enclosed in an evaporator

An evaporator system adapted for emitting insect killing vapors of an insecticide therefrom and comprising a liquid or solid composition enclosed therein, said insecticide consisting in at least one volatile phosphoric acid ester which is stabilized by at least one diazene compound.