73405-43-3

Basic information

• Product Name: Pyridinium, 1-[3,5-bis(1,1-dimethylethyl)-2-hydroxyphenyl]-, bromide
• CAS NO: 73405-43-3
• Molecular Formula: C19H26NO.Br
• Molecular Weight: 364.326
• Mol File: 73405-43-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Pyridinium, 1-[3,5-bis(1,1-dimethylethyl)-2-hydroxyphenyl]-, bromide(CAS DataBase Reference)
• NIST Chemistry Reference: Pyridinium, 1-[3,5-bis(1,1-dimethylethyl)-2-hydroxyphenyl]-, bromide(73405-43-3)
• EPA Substance Registry System: Pyridinium, 1-[3,5-bis(1,1-dimethylethyl)-2-hydroxyphenyl]-, bromide(73405-43-3)

Safety Data

• Hazardous Substances Data: 73405-43-3(Hazardous Substances Data)

Upstream product

• 110-86-1 pyridine 
• 1988-75-6 4-bromo-2,4,6-tri-tert-butyl-2,5-cyclohexadiene-1-one 
• 107-21-1 ethylene glycol 

Downstream Products

• 73405-45-5 2,4-di-tert-butyl-6-(1,2,3,6-tetrahydro-1-pyridyl)phenol 
• 78657-14-4 2-(piperidin-1-yl)-4,6-di-tert-butylphenol 

Relevant articles and documents

Cyclodienones. 7. Preparation and Reduction of 1-(3,5-Di-tert-butyl-2-hydroxyphenyl)pyridinium Halides

The reactions of 4-bromo- (1a) and 4-chloro-2,4,6-tri-tert-butyl-2,5-cyclohexadien-1-one (1b) with compounds such as pyridine (4a), α- (4b), β- (4c), and γ-picoline (4d), and 3,5-lutidine (4e) were carried out under various conditions to produce the corresponding 1-(3,5-di-tert-butyl-2-hydroxyphenyl)pyridinium halides (7) or their intramolecular salts (8).The reduction of 7 and 8 with NaBH4 in methanol afforded in good yields the corresponding tetrahydropyridine derivatives (21), which were reduced to o-piperidinophenols (22) by hydrogenation with Raney Ni (W2) catalyst in high yields.The reaction pathway of the formation of 7 is also discussed.