Synthesis and structure characterization of diethyldiallylammonium chloride

来源期刊：中南大学学报(英文版)2003年第4期

论文作者：刘立华 龚竹青 郑雅杰

文章页码：347 - 351

Key words：unsaturated quaternary ammoniun salt; diethylallylamine; diethyldiallylammonium chloride; diethylamine; allyl chloride; synthesis; characterization

Abstract: The unsaturated quaternary ammonium salt diethyldiallylammonium chloride(DEDAAC) was synthesized in a two-step synthetic method. The influences of the adding method of raw materials and temperature on the yields of diethy-lallylamine (DEAA), and drying and temperature on the synthesis of DEDAAC were investigated. The content of in-pro-cess product DEAA was determined by non-aqueous titration. The structure of product DEDAAC was identified with IR,1H NMR and elemental analysis. The results show that adding allyl chloride and sodium hydroxide alternately can increase the yield of DEAA and decrease by-products. In further synthesizing of DEDAAC from DEAA, the step of drying DEAA is very necessary. When DEAA is dried by solid sodium hydroxide, good columnar crystals with a high purity(mp199.5-201.0℃) are obtained; when DEAA is undried or the content of water in DEAA is above 2%, only platelets with bad quality are obtained even without crystals. The suitable synthesis conditions for DEAA and DEDAAC are 35℃, 6 h and 40℃, 36 h, respectively, and their yields are 69.7% and 67.3%, respectively.