Generally, with acetonitrile, the solvent is soluble, the material is soluble in the system, and the resulting product quaternary ammonium salt is insoluble in the system and precipitates (or cooling the precipitation)
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
Generally, with acetonitrile, the solvent is soluble, the material is soluble in the system, and the resulting product quaternary ammonium salt is insoluble in the system and precipitates (or cooling the precipitation)
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
Generally, with acetonitrile, the solvent is soluble, the material is soluble in the system, and the resulting product quaternary ammonium salt is insoluble in the system and precipitates (or cooling the precipitation)
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
Generally, with acetonitrile, the solvent is soluble, the material is soluble in the system, and the resulting product quaternary ammonium salt is insoluble in the system and precipitates (or cooling the precipitation)
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
Generally, with acetonitrile, the solvent is soluble, the material is soluble in the system, and the resulting product quaternary ammonium salt is insoluble in the system and precipitates (or cooling the precipitation)
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
Generally, with acetonitrile, the solvent is soluble, the material is soluble in the system, and the resulting product quaternary ammonium salt is insoluble in the system and precipitates (or cooling the precipitation)
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
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solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
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solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
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solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
solvent can be screened, including acetone, etherThe premise, as described above
experimental phenomenon, yellow, is likely to be the result of the amine and nitrate reaction, indicating that the system has a free amine presence (quaternization is not complete), which can be used in dichloromethane, ester (Ethyl acetate, etc.), ether and other solvents, remove free amine
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