Carboxyl functionalized porous heteropoly acid polyionic liquid and use thereof
A polyionic liquid, carboxyl functionalization technology, applied in organic chemistry, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as thermal instability of catalysts
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Embodiment 1
[0050] Example 1: N, N- Dimethyl- N -Carboxymethyl- N- Synthesis of Ethyl Methacrylate Quaternary Ammonium Salt (L1)
[0051] Under the protection of nitrogen, add 6mL dimethylaminoethyl methacrylate and 25 mL acetone in turn to the reaction flask, stir well and then raise the temperature to 50°C, add 3.5g chloroacetic acid in three times, and keep it warm for 24h after the addition; After cooling to room temperature, the solvent acetone was removed by rotary evaporation, and then vacuum-dried to constant weight to obtain N, N- Dimethyl- N -Carboxymethyl- N- Ethyl methacrylate quaternary ammonium salt, its productive rate is 97.3%.
[0052] FT-IR(KBr), ν / cm -1 : 3567, 2972, 1716, 1622, 1381.
Embodiment 2
[0053] Example 2: N, N- Dimethyl- N -Carboxyethyl- N- Synthesis of Ethyl Methacrylate Quaternary Ammonium Salt (L2)
[0054] 3.5g chloroacetic acid was replaced by 4.0g 3-bromopropionic acid, others were the same as in Example 1, and the target product yield was 95.4%.
[0055] FT-IR(KBr), ν / cm -1 : 3420, 2960, 1728, 1631, 1390.
Embodiment 3
[0056] Example 3: N, N- Dimethyl- N -(4-carboxy)benzyl- N- Synthesis of Ethyl Methacrylate Quaternary Ammonium Salt (L3)
[0057] 3.5g chloroacetic acid was replaced by 6.1g 4-bromomethylbenzoic acid, and others were the same as in Example 1, and the target product yield was 96.5%.
[0058] FT-IR(KBr), ν / cm -1 : 3475, 3014, 2972, 1716, 1622, 1595, 1498, 1381.
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