932-97-8

Basic information

• Product Name: 4-diazoquinone
• Synonyms: 4-diazoquinone;PARA-DIAZOQUINONE
• CAS NO: 932-97-8
• Molecular Formula: C₆H₄N₂O
• Molecular Weight: 0
• Mol File: 932-97-8.mol
• Article Data: 11

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• CAS DataBase Reference: 4-diazoquinone(CAS DataBase Reference)
• NIST Chemistry Reference: 4-diazoquinone(932-97-8)
• EPA Substance Registry System: 4-diazoquinone(932-97-8)

Safety Data

• Hazardous Substances Data: 932-97-8(Hazardous Substances Data)

Usage

InChI:InChI=1/C6H4N2O/c7-8-5-1-3-6(9)4-2-5/h1-4H

Upstream product

• 673-41-6 p-chlorobenzenediazonium tetrafluoroborate 
• 42766-45-0 4-oxocyclohexa-2,5-dienylidene carbene 
• 123-30-8 4-amino-phenol 
• 7732-18-5 water 
• 1073-71-8 4-hydroxyphenyldiazonium chloride 
• 99280-77-0 sodium 4-hydroxyphenyl diazosulphonate 
• 456-27-9 4-nitrobenzenediazonium tetrafluoroborate 
• 32352-96-8 4-nitro-benzenediazohydroxide, sodium salt 

Downstream Products

• 26191-64-0 4'-methyl-biphenyl-4-ol 
• 38262-85-0 2'-methyl-[1,1'-biphenyl]-4-ol 
• 144084-91-3 C₈H₇NO 
• 123-31-9 hydroquinone 
• 501-92-8 4-(prop-2-enyl)phenol 

Relevant articles and documents

Chemoselective rearrangement reactions of sulfur ylide derived from diazoquinones and allyl/propargyl sulfides

Here, we describe three types of rearrangement reactions of sulfur ylide derived from diazoquinones and allyl/ propargyl sulfides. With Rh2(esp)2 as the catalyst, diazoquinones react with allyl/propargyl sulfides to form a sulfur ylide, which undergoes a chemoselective tautomerization/[2,3]-sigmatropic rearrangement reaction, a Doyle?Kirmse rearrangement/Cope rearrangement cascade reaction, or a Doyle?Kirmse rearrangement/elimination reaction, depending on the substituent of the sulfides. The protocol provides alkenyl and allenyl sulfides and multisubstituted phenols with moderate and high yields.

Preparation of aromatic fluorides: Facile photo-induced fluorinative decomposition of arenediazonium salts and their related compounds using pyridine-nHF

By employing pyridine-nHF solution, the photo-induced fluorinative decomposition of arenediazonium salts (ArN2BF4) (fluoro-dediazoniation) and the related compounds, such as quinonediazides and triazenes, has been successfully carried out to produce the corresponding aromatic fluorides (ArF) in good yields. The rate in the fluoro-dediazoniation of para-substituted ArN2BF4 in pyridine-nHF solution did not obey the classical Hammett equation but conformed well to Taft's treatment [dual substituent parameter relationships (DSP)]. In the thermal fluoro-dediazoniation of ArN2BF4 the rate of reaction was significantly influenced by the substituents in the substrates. On the contrary, only a slight effect by the substituents was observed on the rate of the photo-induced fluoro-dediazoniation of ArN2BF4.

Quinone-type methanofullerene acceptors: Precursors for organic metals

We report details on the synthesis and electrochemistry of quinone-type methanofullerene derivatives in which, depending upon the substitution pattern on the cyclohexanedienone moiety, the reduction potential can be tuned, leading to novel fullerene deriv