Solid non-hydroscopic trialkylamine oxide dihydrates are made by reacting a trialkylamine with aqueous hydrogen peroxide in an inert solvent selected from organic esters (e.g., ethyl acetate), aliphatic hydrocarbons (e.g., heptane), cycloaliphatic hydrocarbons (e.g., cyclohexane), aromatic hydrocarbons (e.g., toluene), aromatic halohydrocarbons (e.g., chlorobenzene), dimethylformamide, dimethylacetamide and dimethylsulfoxide, in an amount that maintains a fluid stirrable reaction mixture. Upon completion of the reaction, water content is adjusted, if necessary, to give a 2/1 mole ratio of water to tert-amine oxide and the product trialkylamine oxide dihydrate is recovered by crystallization from the solvent or by distilling off the solvent to leave the product as a residual material or a flaked or extruded product.
固体非吸湿性三烷基氧化胺
二水合物是通过将
三烷基胺与
过氧化氢水溶液在惰性 溶剂中反应制得的,惰性溶剂可选有机酯(如
乙酸乙酯)、脂肪烃(如
庚烷)、环脂 烃(如
环己烷)、
芳香烃(如
甲苯)、芳香卤代烃(如
氯苯)、二甲基甲酰胺、二甲基乙酰胺、 二甲基甲酰胺、二甲基乙酰胺、二甲基乙酰胺、二甲基乙酰胺、二甲基乙酰胺、二甲基乙酰胺
环己烷)、
芳香烃(如
甲苯)、芳香卤代烃(如
氯苯)、二甲基甲酰胺、二甲基乙酰胺和
二甲基亚砜,其用量应能保持反应混合物的流动性。反应完成后,必要时调整
水含量,使
水与氧化叔胺的摩尔比为 2/1,然后通过从溶剂中结晶或蒸馏掉溶剂来回收氧化
三烷基胺二水合物,使产品成为残留物或片状或挤压产品。