Chlorinated 1-vinyl-3-carboxymethyl imidazole polymerizable acidic ionic liquid and synthetic method thereof
A technology of acidic ionic liquid and carboxymethylimidazole, which is applied in the field of functional materials and its preparation, can solve the problems of low reaction yield, low solubility, and difficult removal, etc., and achieve the effect of improving yield and purity
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[0019] Example 1:
[0020] Dissolve 3.00g (31.75mmol) of 2-chloroacetic acid in 9g of ethyl acetate, stir well at 50°C for 20min to obtain a clear ethyl acetate solution containing 2-chloroacetic acid, and add 0.03g of ethyl acetate to the solution Polymerization inhibitor phenol, stir to dissolve, then add 2.99g (31.75mmol) of 1-vinylimidazole to it, react at 45°C for 48 hours to obtain a white precipitate, wash 3 times with ethyl acetate, 30mL each time, filter The obtained white solid was put into a vacuum drying oven at 50° C. and vacuum dried for 3 hours to obtain 4.67 g of 1-vinyl-3-carboxymethylimidazole chloride with a yield of 78%.
Example Embodiment
[0021] Example 2:
[0022] Dissolve 4.50g (47.62mmol) of 2-chloroacetic acid in 36g of ethyl acetate, stir well at 50°C for 20min to obtain a clear ethyl acetate solution containing 2-chloroacetic acid, and add 0.03g to the solution Polymerization inhibitor phenol, stir to dissolve, then add 2.99g (31.75mmol) of 1-vinylimidazole to it, react at 48℃ for 24 hours to obtain a white precipitate, wash 3 times with ethyl acetate, 30mL each time, filter Put the obtained white solid in a vacuum drying oven at 50° C. and vacuum drying for 3 hours to obtain 4.79 g of 1-vinyl-3-carboxymethylimidazole chloride with a yield of 80%.
Example Embodiment
[0023] Example 3:
[0024] Dissolve 6.00g (63.50mmol) of 2-chloroacetic acid in 30g of ethyl acetate, stir well at 50°C for 20min to obtain a clear ethyl acetate solution containing 2-chloroacetic acid, and add 0.03g of ethyl acetate to the solution Polymerization inhibitor phenol, stir to dissolve, then add 2.99g (31.75mmol) of 1-vinylimidazole to it, react at 50℃ for 18 hours to obtain white precipitate, wash 3 times with ethyl acetate, 30mL each time, filter The obtained white solid was put into a vacuum drying oven at 50° C. and vacuum dried for 3 h to obtain 4.93 g of 1-vinyl-3-carboxymethylimidazole chloride with a yield of 82.3%.
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