Sugar-based quaternary ammonium salt gemini surfactant and synthesis method thereof
A technology of sugar-based quaternary ammonium salt and gemini surface, which is applied in the direction of chemical instruments and methods, amino sugar, dissolution, etc., can solve the problems that are difficult to meet industrial requirements and the yield is less than 30%, and achieve low equipment requirements and synthetic methods The effect of simplicity and simple synthesis process
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Example 1
Glycosyl quaternary ammonium salt gemini surfactant, the chemical formula is as follows:
Preparation:
(1) Add 18g of anhydrous glucose, 40g of 1,3-dichloropropanol, and 0.009g of p-toluenesulfonic acid into a three-neck round-bottomed flask, raise the temperature under stirring and vacuumize, the temperature reaches 80°C, and the degree of vacuum is 0.06MPa . After stirring and reacting for 5 hours, it was cooled to below 60° C., and 40% by mass NaOH / MgO aqueous solution was added under stirring to adjust the pH to 8. Under the vacuum of 0.096 MPa, the temperature was raised to 120 °C, and the 1,3-dichloropropanol was removed under reduced pressure to obtain the dihaloglycoside intermediate;
(2) Add 50.24g of dihaloglycoside intermediate to the round-bottomed flask, add 30.2g of isopropanol and 15.0g of water as solvent, add 33.1g of dodecyl dimethyl tertiary amine, raise the temperature to 80 ℃, at The reaction was carried out for 4 hours with stirring. Afte...
Example Embodiment
Glycosyl quaternary ammonium salt gemini surfactant, the chemical formula is as follows:
Preparation:
(1) Add 18g of anhydrous glucose, 230g of 1,5-dichloropentanol, and 0.3g of dodecylbenzenesulfonic acid into a three-neck round-bottomed flask. is 0.08MPa. After stirring and reacting for 3 hours, it was cooled to below 40 °C, and a KOH / MgO aqueous solution with a mass percentage of 30% was added under stirring to adjust the pH to 8. Under the vacuum degree of 0.096 MPa, the temperature was raised to 150 °C, and 1 was removed under reduced pressure. , 5-dichloropentanol, to obtain a dihaloglycoside intermediate;
(2) 40.54g of dihaloglycoside intermediate was added to the round-bottomed flask, isopropanol aqueous solution was added, 17.27g of decyldimethyl tertiary amine was added, the temperature was raised to 85°C, and the reaction was carried out under stirring for 8 hours. After the reaction was stopped, the product was obtained.
Example Embodiment
Example 3
Glycosyl quaternary ammonium salt gemini surfactant, the chemical formula is as follows:
Preparation:
(1) Add 18g anhydrous glucose, 230g 1,4-dichlorobutanol, and 0.12g sulfuric acid into a three-neck round-bottomed flask, raise the temperature under stirring and vacuumize, the temperature reaches 110°C, and the vacuum degree is 0.08MPa. After stirring the reaction for 5 hours, it was cooled to below 50°C, and 40% NaOH / CaO aqueous solution was added under stirring to adjust the pH to 8. Under the vacuum degree of 0.096 MPa, the temperature was raised to 150°C, and 1 was removed under reduced pressure. ,4-Dichlorobutanol, to obtain the intermediate of dihaloglycosides;
(2) Add 50.24g of dihaloglycoside intermediate to the round-bottomed flask, add 30.2g of isopropanol and 15.0g of water as solvent, add 33.1g of dodecyl dimethyl tertiary amine, raise the temperature to 80 ℃, at The reaction was carried out for 4 hours with stirring. After the reaction stopped, th...
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