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测定了过氧化月桂酰(1),过氧化辛酰(2),过氧化己酰(3)和过氧化3,5,5-三甲基己酰(4)在热分解过程中生成的羧基转化产物[RC(O)OC(O)OR,R=正十一烷基(5),正庚基(6),正戊基(7),2,4,4-三甲基戊基(8)]的含量,在同样条件下,4生成的羧基转化产物比1,2和3的多,羧基转化反应受溶剂极性和粘度的影响,但温度的影响较小,转化产物的分解受体系中相应脂肪酸的催化,直接光照可生成少量转化产物,二苯酮光敏化不产生羧基转化产物,文中对反应机理进行了讨论。
The carboxyl groups generated during thermal decomposition of lauroyl peroxide (1), octanoyl peroxide (2), hexanoyl peroxide (3) and 3,5,5-trimethylhexanoyl peroxide (4) The conversion product [RC (O) OC (O) OR, R = n-undecyl (5), n-heptyl (6), n-pentyl (7), 2,4,4-trimethylpentyl 8)]. Under the same conditions, 4 produced more carboxyl conversion products than 1, 2 and 3, and the carboxyl conversion reaction was affected by solvent polarity and viscosity, but the influence of temperature was small. The decomposition products of the conversion products Under the catalysis of the corresponding fatty acids in the system, a small amount of conversion products can be formed by direct light irradiation, and no carboxyl conversion products are generated by the photosensitization of benzophenone. The reaction mechanism is discussed in the article.