Butylparaben synthesis
- Product Name:Butylparaben
- CAS Number:94-26-8
- Molecular formula:C11H14O3
- Molecular Weight:194.23
Yield:94-26-8 95.3%
Reaction Conditions:
with benzimidazole bisulfate ionic liquidReflux;
Steps:
5 Example 5 Preparation of benzyl paraben:
Add p-hydroxybenzoic acid (1 mol), alcohol (5 mol) and benzimidazole ionic liquid (0.5 mol) to the dry three-necked flask, slowly warm up, reflux the reaction, and monitor by TLC until the reaction is completed; the solvent is distilled off under reduced pressure, and the remainder is used Wash with ethyl acetate and filter with suction. The filter cake is benzimidazole ionic liquid, which can be reused; the filtrate is spin-dried to obtain 95.3% yield of benzyl paraben, mp68-69 .
References:
CN110878018,2020,A Location in patent:Paragraph 0037-0040
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