Paper
Synthesis and Process Improvement of Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionate
Published 2010 · Huo Xiao-jian
Technology & Development of Chemical Industry
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Abstract
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate was an antioxidant and also the main raw material of antioxidant 1010,antioxidant 1076,etc.The process conditions of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate was studied and the yield was improved.The yield of traditional methods which used sodium methylate as catalyst was 75%～85%.Used KOH as catalyst,under the reaction condition of material ratio:n(2,6-di-tert-butyl-phenol):(methyl acrylate)=1:1.1,dropping temperature 110 ℃,dropping for 1.5h,reaction temperature 130 ℃ for 4h,after the crystallization in methanol,filtration and desiccation,the white products was got(the average yield of 95%).The melting point was 63～65 ℃.The quality of product conformed to literature.
The study improved the yield of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate using KOH catalyst, resulting in a 95% average yield and conforming to literature standards.
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