resins. However, polymers derived from 8RO-POSS via the sol–gel process have seldom been reported owing to their synthetic difficulty. In this study, we attempted to use zinc acetate (Zn(OAc)2) as the catalyst for the synthesis of a series of 8RO-POSS from octahydrido-POSS (8H-POSS). The reaction conditions were optimized using heptaisobutyl monohydride-POSS (7iBu1H-POSS) as a model reaction. The desired
八烷氧基取代的多面体低聚倍半
硅氧烷 (8RO-POSS) 是生产有机
硅树脂的一种有吸引力的原材料。然而,由于合成困难,通过溶胶-凝胶法从 8RO-POSS 衍生的聚合物很少有报道。在本研究中,我们尝试使用
乙酸锌(Zn(OAc) 2 )作为催化剂,从八氢-POSS(8H-POSS)合成一系列8RO-POSS。使用七异丁基一
氢化物-POSS (7iBu1H-POSS) 作为模型反应优化反应条件。在优化条件下以 96% 的收率获得了所需产物。使用
甲醇(MeOH)、
乙醇(EtOH)、
异丙醇(i-PrOH)和
叔丁醇( t -BuOH)在Zn(OAc) 2作为催化剂存在下进行8H-POSS的烷氧基化。尽管八甲氧基-POSS (8MeO-POSS)是在副产物存在下分离的,但八乙氧基-POSS (8EtO-POSS)和八异丙氧基-POSS (8iPrO-POSS)的产率很高。在使用t -BuOH的情况下烷氧基化度为55%。