Study on the synthesis of ester containing asymmetric cationic surfactant
Tong Bai
Abstract
Tong Bai
Abstract
The intermediate N,N-dimethylaminoethyl benzoate(Ⅰ) was synthesized from dimethyl phthalate ester, N,N-dimethyl ethanolamine catalyzed by sodium methoxide-methanol solution by transestenfication.The yield ofⅠis 24.90%.Ester containing asymmetric cationic surfactant(Ⅱ) was synthesized with the N,N-dimethylaminoethyl phthalate ester and 1-bromooctane by quaternization.The yield ofⅡis 51.61%.The optimum conditions were investigated by single factor experimental.The structures of intermediate and product are verified by ~1H-NMR and IR.
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The intermediate N,N-dimethylaminoethyl benzoate(Ⅰ) was synthesized from dimethyl phthalate ester, N,N-dimethyl ethanolamine catalyzed by sodium methoxide-methanol solution by transestenfication.The yield ofⅠis 24.90%.Ester containing asymmetric cationic surfactant(Ⅱ) was synthesized with the N,N-dimethylaminoethyl phthalate ester and 1-bromooctane by quaternization.The yield ofⅡis 51.61%.The optimum conditions were investigated by single factor experimental.The structures of intermediate and product are verified by ~1H-NMR and IR.
Key concepts: Sodium methoxide, Cationic polymerization, Pulmonary surfactant, Yield (engineering), Methanol, Ethanolamine, Chemistry, Dimethyl phthalate