83430-87-9

Basic information

• Product Name: 2,4,6-Tri-tert-butyl-4-pyrazol-1-yl-cyclohexa-2,5-dienone
• Synonyms: 2,4,6-Tri-tert-butyl-4-pyrazol-1-yl-cyclohexa-2,5-dienone
• CAS NO: 83430-87-9
• Molecular Weight: 328.498
• Mol File: 83430-87-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,4,6-Tri-tert-butyl-4-pyrazol-1-yl-cyclohexa-2,5-dienone(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4,6-Tri-tert-butyl-4-pyrazol-1-yl-cyclohexa-2,5-dienone(83430-87-9)
• EPA Substance Registry System: 2,4,6-Tri-tert-butyl-4-pyrazol-1-yl-cyclohexa-2,5-dienone(83430-87-9)

Safety Data

• Hazardous Substances Data: 83430-87-9(Hazardous Substances Data)

Upstream product

• 288-13-1 NH-pyrazole 
• 5457-60-3 4-chloro-2,4,6-tri-tert-butylcyclohexa-2,5-dienone 
• 1988-75-6 4-bromo-2,4,6-tri-tert-butyl-2,5-cyclohexadiene-1-one 

Downstream Products

• 83430-90-4 2,6-Di-tert-butyl-4-pyrazol-1-yl-phenol 
• 16209-02-2 4-(pyrazol-1-yl)-phenol 

Relevant articles and documents

CYCLODIENONES. 9. REACTION 4-HALO-2,4,6-TRI-TERT-BUTYL-2,5-CYCLOHEXADIEN-1-ONES WITH PYRAZOLES AND PREPARATION OF 1-(2-HYDROXYPHENYL)- AND 1-(4-HYDROXYPHENYL)PYRAZOLES

Reaction of 4-halo-2,4,6-tri-tert-butyl-2,5-cyclohexadien-1-one (1) with pyrazoles (8) afforded 4-(pyrazol-1-yl)-2,4,6-tri-tert-butyl-2,5-cyclohexadien-1-ones (9), 1-(4-hydroxy-3,5-di-tert-butylphenyl)- and 1-(2-hydroxy-3,5-di-tert-butylphenyl)pyrazoles (10 and 11) together with by-products.De-tert-butylation of 9, 10 and 11 was carried out in boiling 85percent H3PO4 to give the corresponding 1-(4-hydroxyphenyl)- and 1-(2-hydroxyphenyl)pyrazoles (17 and 18) in good yields, respectively.