反应详情

The solution of 6.2 g 3-acrylamidopropyldimethylamine (M=156.23 g/mol-39.7 mmol) and of 88 mg hydroquinone (M=110.11 mol/l-0.02 eq.) in 17 ml anhydrous acetonitrile is magnetically stirred at ambient temperature in an argon stream. The solution of 3.5 ml distilled propanesultone (M=122.14 g/mol-d=1.392-1 eq.) in 5 ml anhydrous acetonitrile is added drop by drop. A white precipitate appears. The suspension is stirred in an argon stream for 24 hours at ambient temperature. The precipitate is then filtered, washed with anhydrous acetonitrile, then with anhydrous acetone, and dried. 10.3 g 3-[(3-acrylamidopropyl)dimethylammonio]propanesulfonate (M=278.36 g/mol) are thus obtained. Yield: 93%. The purity of the product is controlled by elemental analysis: C: 47.27%; H: 7.88%; N: 10.41%; S: 11.55%, the percentages calculated from the empirical formula (C11H22N2O4S) being as follows: C, 47.46%, H: 7.97%, N: 10.06%; S, 11.52%.

1. additionis added drop by drop
2. filtrationThe precipitate is then filtered
3. washwashed with anhydrous acetonitrile
4. dry with materialwith anhydrous acetone, and dried