Diaryliodonium salts are disclosed, as well as a method for preparing them, in which one of the aryl groups bonded to the positively-charged iodine ion contains a methyl substituent, and the other one contains a hydroxyl-substituted alkoxy group. The salts are synthesized from (o, m, or p)- iodotoluene, as opposed to iodobenzene, and therefore do not pose a carcinogenic risk. In addition, the present salts are unexpectedly more soluble in most organic solvents, as well as in nonpolar monomers, than the corresponding benzene catalysts. The salts are useful as cationic photoinitiators, cationic thermal initiators (often combined with a cocatalyst, e.g. copper), and as starting materials in the synthesis of urethane-containing iodonium salts.
日记
碘酸盐已被披露,以及一种制备它们的方法,在这种方法中,与正电
碘离子结合的芳基之一含有甲基取代基,另一个含有羟基取代的烷氧基团。这些盐是从(o,m或p)-
碘甲苯合成的,而不是
碘苯,因此不会造成致癌风险。此外,目前的盐在大多数有机溶剂以及非极性单体中的溶解度意外地更高,比相应的苯催化剂更高。这些盐可用作阳离子光
引发剂、阳离子热
引发剂(通常与辅助催化剂,例如
铜,结合使用),以及在合成含有
脲基
碘酸盐的起始材料中使用。