3117-03-1

Basic information

• Product Name: 2,5-Dimethoxybenzo-1,4-quinone
• Synonyms: 2,5-dimethoxy-4-benzoquinone;2,5-DIMETHOXY-1,4-BENZOQUINONE;2,5-DIMETHOXY-P-QUINONE;Dimethoxybenzoquinone;2,5-DIMETHOXY-PARA-BENZOQUINONE;2,5-Dimethoxybenzo-1,4-quinone;2,5-Dimethoxy-2,5-cyclohexadiene-1,4-dione;2,5-Dimethoxy-p-benzoquinone
• CAS NO: 3117-03-1
• Molecular Formula: C₈H₈O₄
• Molecular Weight: 168.15
• Product Categories: Anthraquinones, Hydroquinones and Quinones;Benzoquinones;Benzoquinones, etc. (Charge Transfer Complexes);Charge Transfer Complexes for Organic Metals;Functional Materials
• Mol File: 3117-03-1.mol
• Article Data: 34

Chemical Properties

• Melting Point: >200 °C (decomp)
• Boiling Point: 311.1 °C at 760 mmHg
• Flash Point: 139.2 °C
• Appearance: /
• Density: 1.24 g/cm³
• Vapor Pressure: 0.000576mmHg at 25°C
• Refractive Index: 1.503
• Storage Temp.: -20°C Freezer
• Solubility: Chloroform (Slightly, Heated), Methanol (Slightly, Heated)
• CAS DataBase Reference: 2,5-Dimethoxybenzo-1,4-quinone(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-Dimethoxybenzo-1,4-quinone(3117-03-1)
• EPA Substance Registry System: 2,5-Dimethoxybenzo-1,4-quinone(3117-03-1)

Safety Data

• Statements: 36/37/38
• Safety Statements: 26-36
• Hazardous Substances Data: 3117-03-1(Hazardous Substances Data)

Usage

Synthesis Reference(s)

Journal of the American Chemical Society, 117, p. 8879, 1995 DOI: 10.1021/ja00139a033

InChI:InChI=1/C8H8O4/c1-11-7-3-6(10)8(12-2)4-5(7)9/h3-4H,1-2H3

Upstream product

• 67-56-1 methanol 
• 20765-04-2 2,5-diethoxy-[1,4]benzoquinone 
• 615-94-1 2,5-dihydroxy-1,4-benzoquinone 
• 18113-18-3 2,5-dimethoxyphenol 
• 18211-01-3 4-chloro-2,5-dimethoxyphenol 
• 1818-28-6 2',4',5'-trimethoxyacetophenone 
• 186581-53-3 diazomethane 
• 5691-70-3 2-hydroxy-5-methoxycyclohexa-2,5-diene-1,4-dione 
• 29783-26-4 cis-4-cyclopentene-1,3-diol 
• 13239-13-9 2,5-dimethoxyhydroquinone 
• 2441-46-5 1,2,4,5-tetramethoxybenzene 
• 7697-37-2 nitric acid 
• 74-88-4 methyl iodide 
• 135-77-3 1,2,4-trimethoxy-benzene 

Downstream Products

• 90433-69-5 2-methoxy-5-morpholino-[1,4]benzoquinone 
• 2441-46-5 1,2,4,5-tetramethoxybenzene 
• 7210-71-1 2,5-dichloro-3,6-dimethoxy-1,4-benzoquinone 
• 615-94-1 2,5-dihydroxy-1,4-benzoquinone 
• 57998-72-8 2,5-dibromo-3,6-dimethoxy-1,4-benzoquinone 
• 479-22-1 nitranilic acid 
• 13239-13-9 2,5-dimethoxyhydroquinone 
• 1521-06-8 2,5-diaminocyclohexa-2,5-diene-1,4-dione 
• 854724-38-2 5,6-dichloro-2,5-dimethoxy-cyclohex-2-ene-1,4-dione 
• 14786-37-9 1,4-diacetoxy-2,5-dimethoxybenzene 
• 1520-97-4 2,5-bis(ethylamino)-1,4-benzoquinone 
• 3421-08-7 2,5-bis(phenylamino)-1,4-benzoquinone 
• 390409-70-8 2-anilino-5-methoxy-[1,4]benzoquinone 
• 1654-14-4 2,5-bis(methylamino)-1,4-benzoquinone 

Relevant articles and documents

Base-Promoted Reactions of Hydroxyquinones with Pyrones: A Direct and Sustainable Entry to Anthraquinones and Naphthoquinones

Hydroxybenzoquinones and hydroxynaphthoquinones react with methyl coumalate and 5-cyanopyrone to generate anthraquinones and naphthoquinones in good to excellent yields.

COMPOUND FOR HARD MASK, HARD MASK COMPOSITION COMPRISING SAID COMPOUND, AND METHOD FOR FORMING SEMICONDUCTOR ELEMENT FINE PATTERN USING SAID COMPOUND

The present invention relates to a compound for a hard mask, a hard mask composition comprising the same, and a method for forming a fine pattern of a semiconductor element using the same. The compound for a hard mask according to the present invention has high solvent solubility that can be applied to a spin coating method, and thus it is possible to prepare a hard mask composition that not onlyhas excellent gap filling performance, but also has excellent heat resistance and etching resistance after curing. In addition, it is possible to provide a fine pattern forming method of a semiconductor element using the same.

Steric effects of bulky tethered arylpiperazines on the reactivity of Co-Schiff base oxidation catalysts—a synthetic and computational study

New C2-symmetric and C2-asymmetric Co-Schiff base catalysts tethered to arylpiperazine units were synthesized and used to oxidize phenolic lignin models to para-benzoquinones. Synthetic approaches to these catalysts were optimized to include fewer steps and broaden the types of catalyst structures available. In contrast to conventional Co-Schiff base catalysts, these systems induce phenolic oxidation in the absence of an external axial base, simplifying the process. Asymmetric catalysts bearing a phenylethylene or diphenylmethyl piperazine substituent display the highest catalytic activity observed to date for the conversion of S-models to 2,6-dimethoxybenzoquinone (DMBQ). Computational analysis shows that more reactive catalysts populate conformations that favor oxidation in preference to non-productive decomposition routes. This balance between catalyst reactivity and catalyst deactivation is optimized by inclusion of sufficient steric bulk around the periphery of the Schiff base ligand, reducing catalyst deactivation and allowing oxidations to proceed in the absence of an added axial ligand.