1988-75-6

Basic information

• Product Name: 4-bromo-246-tri-tert-butyl-25-cyclohexadienone
• Synonyms: 2,5-Cyclohexadien-1-one, 4-bromo-2,4,6-tris(1,1-dimethylethyl)-
• CAS NO: 1988-75-6
• Molecular Formula: C₁₈H₂₉BrO
• Molecular Weight: 341.33
• Mol File: 1988-75-6.mol
• Article Data: 6

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4-bromo-246-tri-tert-butyl-25-cyclohexadienone(CAS DataBase Reference)
• NIST Chemistry Reference: 4-bromo-246-tri-tert-butyl-25-cyclohexadienone(1988-75-6)
• EPA Substance Registry System: 4-bromo-246-tri-tert-butyl-25-cyclohexadienone(1988-75-6)

Safety Data

• Hazardous Substances Data: 1988-75-6(Hazardous Substances Data)

Upstream product

• 56-23-5 tetrachloromethane 
• 3315-32-0 2,4,6-tri-tert-butylphenoxyl 
• 7726-95-6 bromine 
• 71-43-2 benzene 
• 732-26-3 2,4,6-tri-tert-butylphenoxol 
• 64-19-7 acetic acid 

Downstream Products

• 73083-36-0 4-Benzyloxy-2,4,6-tri-t-butyl-2,5-cyclohexadienon 
• 65131-33-1 (1,3,5-Tri-tert-butyl-4-oxo-cyclohexa-2,5-dienyl)-acetaldehyde 
• 66286-16-6 2,4-Di-tert-butyl-6-vinyloxy-phenol 
• 3315-32-0 2,4,6-tri-tert-butylphenoxyl 
• 1191914-75-6 3-(3,5-di-tert-butyl-2-hydroxyphenyl)-1-isopropyl-1H-imidazol-3-ium bromide 
• 1191914-76-7 (2-HO-3,5-(t-Bu)2C₆H₂NCH=CHN(Ph)CH)Br 
• 1191914-70-1 3-(3,5-di-tert-butyl-2-hydroxyphenyl)-1-methyl-1H-imidazol-3-ium bromide 
• 4971-61-3 2,4,6-tri-tert-butyl-4-hydroxy-2,5-cyclohexadienone 
• 69217-39-6 2,4,6-tri-tert-butyl-4-tert-butoxy-2,5-cyclohexadienone 
• 69217-38-5 4-isopropoxy-2,4,6-tri-tert-butylcyclohexa-2,5-dienone 
• 732-26-3 2,4,6-tri-tert-butylphenoxol 
• 15910-49-3 2,4,6-tri-tert-butyl-4-methoxy-2,5-cyclohexadienone 
• 20778-61-4 4-Acetoxy-2,4,6-tri-tert-butylcyclohexa-2,5-dien-1-one 
• 20784-82-1 2,3,5-Tri-tert.-butyl-cyclohexen-⁽⁵⁾-dion-(1,4) 

Relevant articles and documents

(Diacetoxyiodo)benzene-Lithium Bromide as a Convenient Electrophilic Br+ Source

A mild and versatile procedure for the bromination of olefins and activated arenes by in situ generation of 'Br+' using (diacetoxyiodo)benzene and lithium bromide is presented. The reactions were carried out in open vessels at room temperature and were typically complete in 30 minutes. The brominated products were isolated by column chromatography, which also allowed for the isolation of the iodobenzene by-product for recycle.

Solid-phase bromination of hindered phenols

The solid-phase bromination of a series of tert-butyl-substituted phenols with N-bromosuccinimide and dioxane dibromide afforded halogenated cyclohexadienones, quinobromides. Under the extrusion conditions, the latter underwent further transformations, mainly, debromination. A new reaction, dioxane dibromide catalyzed anhydro-heterocyclization of 2,2′-dihydroxy-3,3′,5,5′-tetra-tert-butyldiphenyl to 2,4,6,8-tetra-tert-butyldibenzofuran, was discovered and the mechanism of this reaction was proposed.