Symmetrical saturated and unsaturated primary dialkyl peroxides 1 were prepared in a phase-transfer reaction by direct action of potassium superoxide, tetraethylammonium bromide and alkyl bromide in dimethylformamide solution. Applicability of the method to the preparation of unsymmetrical dialkyl peroxides was demonstrated by the example of butyl octyl peroxide (2). Yields generally exceeded 80% for symmetrical dialkyl peroxides with total carbon numbers above 12 carbon atoms. Peroxide content of the isolated dialkyl peroxides generally exceeded 90%.
通过在二甲基甲酰胺溶液中,过氧基
钾、
溴化
四乙基铵和烷基
溴的直接作用,通过相转移反应制备了对称的饱和和不饱和二烷基过氧化物1。以丁基
辛基过氧化物(2)为例,展示了该方法在制备非对称二烷基过氧化物中的适用性。对于总碳数超过12个碳原子的对称二烷基过氧化物,产率通常超过80%。分离得到的二烷基过氧化物的过氧化物含量普遍超过90%。