Cinnamic acetal diglycidyl ether and preparation method and application thereof
A technology of diglycidyl ether and glycidyl ether, which is applied in the field of cinnamon acetal diglycidyl ether and its preparation, can solve the problems of restricting the application of polymer materials, and achieve a low difficulty, wide application prospect, and mild reaction conditions Effect
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[0031] Example 1
[0032] Such as Figure 1 to Figure 3 As shown, Embodiment 1 of the present invention includes the following steps:
[0033] (1) At room temperature, weigh 6.6g (0.05mol) of cinnamaldehyde and 23.8g (0.22mol) of trimethyl orthoformate in a dry and clean round bottom flask, dissolve them in 60mL of methanol, and add 30mg of p-toluenesulfonic acid , The reaction system was refluxed for 6 hours at 72°C and 800r / min;
[0034] (2) Add saturated sodium bicarbonate aqueous solution to the reaction system in batches to pH=7-8, remove p-toluenesulfonic acid, concentrate under reduced pressure, extract 3 times with 3*40mL dichloromethane, collect the organic layer, add 8g anhydrous Sodium sulfate removes water for 6 hours;
[0035] (3) Remove the anhydrous sodium sulfate by filtration, remove the solvent under reduced pressure, and separate by column chromatography. The column chromatography components are in a volume ratio, petroleum ether: ethyl acetate = 10:1, to obtain a ...
Example Embodiment
[0044] Example 2
[0045] (1) At room temperature, weigh 3.3 g of cinnamaldehyde and 9.9 g of trimethyl orthoformate in a dry and clean round bottom flask, dissolve in 30 mL of methanol, add 12 mg of p-toluenesulfonic acid, and the reaction system is at 68°C, 800r Reflux for 4 hours at / min;
[0046] (2) Add a saturated aqueous sodium bicarbonate solution to the reaction system in batches to pH=7-8, remove p-toluenesulfonic acid, concentrate under reduced pressure, and extract 3 times with 3*20 mL of dichloromethane. Collect the organic layer and add 4 g of anhydrous Sodium sulfate removes water for 4 hours;
[0047] (3) Remove the anhydrous sodium sulfate by filtration, remove the solvent under reduced pressure, and separate by column chromatography. The column chromatography components are in a volume ratio, petroleum ether: ethyl acetate = 10:1, to obtain a light yellow liquid cinnamon acetal 3.87 g, the yield is 87%;
[0048] (4) Dissolve 3.87g of cinnamon acetal and 3.48g of gl...
Example Embodiment
[0051] Example 3
[0052] (1) At room temperature, weigh 5 g of cinnamaldehyde and 25 g of trimethyl orthoformate in a dry and clean round bottom flask, dissolve in 90 mL of methanol, add 45 mg of p-toluenesulfonic acid, and the reaction system is at 80°C, 800 r / min Reflux for 8 hours;
[0053] (2) Add a saturated aqueous sodium bicarbonate solution to the reaction system in batches to pH=7-8, remove p-toluenesulfonic acid, concentrate under reduced pressure, extract 3 times with 3*30mL dichloromethane, collect the organic layer, add 10g anhydrous Sodium sulfate removes water for 6 hours;
[0054] (3) Remove the anhydrous sodium sulfate by filtration, remove the solvent under reduced pressure, and separate by column chromatography. The column chromatography components are in a volume ratio, petroleum ether: ethyl acetate = 10:1, to obtain a light yellow liquid cinnamon acetal 5.2 g, the yield is 77%;
[0055] (4) Dissolve 5.2 g of cinnamon acetal and 6.24 g of hydroxyethyl acrylate ...
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