在此,我们研究了使用 3-氯丙基和氯甲基二甲基甲硅烷基乙基官能化 T 8 、T 10和 T 12 POSS 作为前体合成叠氮基官能化较大多面体低聚倍半硅氧烷 (POSS) 过程中的产物类型和分布。我们的研究结果表明,3-氯丙基官能化的 POSS 笼发生了笼重排,稳定性顺序为 T 12 > T 10 > T 8 ,而氯甲基二甲基甲硅烷基乙基官能化的 POSS 笼在亲核取代后保持结构完整。
Amine-catalyzed condensation of silanols (1a and 1b) and related siloxanes (1c–1f) provided polyhedral oligomeric silsesquioxane (POSS) (2a, 2e, 3f, 4a, 4f, and 5f) in moderate yields. Although phenyl, o-methylphenyl (o-MePh) and vinyl (Vi) substituted silanols (1a and 1b) and siloxanes (1c–1f) gave a separable mixture of cage compounds, amine catalyst showed the selectivity of higher cage formation.
Herein, we investigate the product type and distribution during the synthesis of azido-functionalized larger polyhedral oligomeric silsesquioxanes (POSSs) using 3-chloropropyl- and chloromethyldimethylsilylethyl-functionalized T8, T10, and T12 POSSs as precursors. Our findings indicate that cagerearrangement occurs for the 3-chloropropyl-functionalized POSS cages with a stability order of T12 > T10
在此,我们研究了使用 3-氯丙基和氯甲基二甲基甲硅烷基乙基官能化 T 8 、T 10和 T 12 POSS 作为前体合成叠氮基官能化较大多面体低聚倍半硅氧烷 (POSS) 过程中的产物类型和分布。我们的研究结果表明,3-氯丙基官能化的 POSS 笼发生了笼重排,稳定性顺序为 T 12 > T 10 > T 8 ,而氯甲基二甲基甲硅烷基乙基官能化的 POSS 笼在亲核取代后保持结构完整。