54175-62-1

Upstream product

• 5082-72-4 1-[3,5-di-tert-butyl-4-hydroxyphenyl]-butan-3-one 
• 598-32-3 2-hydroxy-3-butene 
• 128-39-2 2,6-di-tert-butylphenol 
• 18826-95-4 1.3-butanediol 
• 955-01-1 3,5-di-tert-butyl-4-hydroxy benzyl chloride 
• 584-08-7 potassium carbonate 

Downstream Products

• 61360-97-2 4-(3,5-di-t-butyl-4-hydroxyphenyl)-2-butyl methacrylate 
• 57717-51-8 terephthalic acid di-4-(3,5-di-tert.butyl-4-hydroxyphenyl)-2-butyl ester 

Relevant academic research and scientific papers

γ-hydroxypropylation of 2,6-dialkyl(aryl)phenols with allyl alcohol and its derivatives

The composition of the products of the reaction of 2,6-disubstituted phenols with allyl alcohol and its derivatives in an alkaline medium was investigated, the conditions for carrying out the reaction with the predominant formation of 4-(3-hydroxypropyl)-2,6-dialkyl(aryl)phenols were found, and its mechanism was suggested. The reaction was examined on an industrial scale. An important result is the practical demonstration of alkaline catalysis performed under homogeneous conditions with participation of phenols, when the used alkaline catalyst is recovered in the process without the formation of waste waters. Pleiades Publishing, Ltd., 2010.

Synthesis of 4-(ω-hydroxyalkyl)-2,6-di-tert-butylphenols and the properties of related sulfides

Reaction of 2,6-di-tert-butylphenol with aliphatic linear and branched diols in an alkaline medium at a temperature of 180-220°C leads to the formation of 4-(ω-hydroxyalkyl)-2,6-di-tert-butylphenols. The increase in the product yield and reducing the reaction temperature was reached at the catalysis of this reaction with zinc oxide. The structure of the diphenylalkane derivatives generated in side reaction was proved and the structural influence of the length of the aliphatic residue on the antioxidant effectiveness of the sulfides derived from the corresponding hydroxyalkylphenols was examined.

Phosphite ester stabilizers

Compounds of the formula I STR1 in which R1 and R2 independently of one another denote alkyl, cycloalkyl or aralkyl, R3 denotes hydrogen or, conjointly with R1, denotes tetramethylene, R4 denotes hydr

Preparation of antioxidants

This invention comprises an alkylation, reduction and transesterification process for the preparation of ester substituted phenols. The products are useful as antioxidants and may be prepared in high yields and with a high degree of purity.