一种3,5-二叔丁基-4-羟基苯甲酸十六酯合成方法
By using hexadecyltrimethylammonium bromide and 4-sulfonylcalix[6] aromatic catalyst, combined with microwave treatment and anhydrous magnesium sulfate dehydration, the selectivity and yield of hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate were improved, and the product quality problems existing in the prior art were solved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU JIYI NEW MATERIAL CO LTD
- Filing Date
- 2024-01-15
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, the selectivity and yield of hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate are low, and the catalysts used are prone to causing the tert-butyl group of the product to be removed, which affects the product quality.
Hexadecyltrimethylammonium bromide and 4-sulfonylcalix[6] aromatics were used as catalysts. 3,5-di-tert-butyl-4-hydroxybenzoic acid was brought into contact with n-hexadecyl alcohol by spraying and combined with microwave treatment. Acetone was used as solvent and anhydrous magnesium sulfate was used to remove water, and the reaction conditions were optimized.
It significantly improved the yield and selectivity of hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, reduced chemical toxicity and energy consumption, and simplified the product separation process.