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2,6-Di- tert -butylphenol is prepared industrially via the Friedel–Crafts alkylation of phenol with isobutene catalyzed by aluminium phenoxide: C 6 H 5 OH + 2 CH 2 =C (CH 3) 2 → ( (CH 3) 3 C) 2 C 6 H 3 OH. In this way, approximately 2.5M kg/y are produced. [2] Alkylation of phenol usually favours the para-position, and a strong lewis acid ...
The chemical synthesis of BHT in industry has involved the reaction of p-cresol (4-methylphenol) with isobutylene (2-methylpropene), catalyzed by sulfuric acid: [11] CH 3 (C 6 H 4)OH + 2 CH 2 =C(CH 3) 2 → ((CH 3) 3 C) 2 CH 3 C 6 H 2 OH. Alternatively, BHT has been prepared from 2,6-di-tert-butylphenol by hydroxymethylation or aminomethylation ...
2,6-Di-tert-butylpyridine is an organic compound with the formula (Me 3 C) 2 C 5 H 3 N. This colourless, oily liquid is derived from pyridine by replacement of the two H atoms with tert-butyl groups. It is a hindered base. [1] For example, it can be protonated, but it does not form an adduct with boron trifluoride.
Properties. 2,4,6-Tri- tert -butylphenol is a white solid which dissolves in many organic solvents, but not in aqueous or alcoholic alkaline solutions. The green-blue coloring with iron (III)chloride, which is characteristic for phenols, does not occur in 2,4,6-TTBP. The compound is oxidizable in air but practically non-biodegradable.
2,4-Di- tert -butylphenol. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 2,4-Di-tert-butylphenol (2,4-DTBP) is a white solid with a phenolic odour. It is primarily used as a raw material for the production of several commercially important antioxidants and phenolic ...
tert-Butyl alcohol is the simplest tertiary alcohol, with a formula of (CH 3) 3 COH (sometimes represented as t -BuOH). Its isomers are 1-butanol, isobutanol, and butan-2-ol. tert -Butyl alcohol is a colorless solid, which melts near room temperature and has a camphor -like odor. It is miscible with water, ethanol and diethyl ether.
2-tert-Butyl phenol is an organic compound with the formula (CH 3) 3 CC 6 H 4 OH. It is one of three isomeric tert -butyl phenols. It is a colorless oil that dissolves in basic water. It can be prepared by acid-catalyzed alkylation of phenol with isobutene. [2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Pentaerythritol tetrakis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) is a chemical compound composed of 4 sterically hindered phenols linked through a pentaerythritol core. It is used as primary antioxidant for stabilizing polymers ...