Synthesis of a series of new anti-oxidants
An antioxidant, a series of technologies, applied in organic chemistry, chemical instruments and methods, preparation of organic compounds, etc., can solve problems such as small molecular weight, changes in physical or chemical properties, and lack of chemical activity, etc., to achieve simple process , Conducive to the effect of industrial production
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[0023] Preparation of 2,6-di-tert-butyl-p-heptylphenol
[0024] Add 4-heptylphenol (100g), tert-butanol (192.7g), and glacial acetic acid (100ml) to a 1L three-necked flask equipped with mechanical stirring and a thermometer, under argon protection, and cool to (0~ 5) ℃, start to add concentrated sulfuric acid dropwise, add dropwise to control the temperature (0~5)°C, after the dropwise addition, increase the temperature to (5~15)°C and react for 7hrs; slowly pour the reaction liquid into the constantly stirring ice water; use toluene Extraction, liquid separation, the aqueous phase was extracted twice with toluene, the combined organic phases were washed with saturated sodium chloride aqueous solution to neutrality, the organic phase was washed with anhydrous sodium sulfate, filtered desiccant, the organic phase was concentrated to dryness, and the concentrated and dried crude product Carry out high-vacuum ...
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