Degradable Polyacetals/Ketals from Alternating Ring-Opening Metathesis Polymerization,ACS Macro Letters

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Degradable Polyacetals/Ketals from Alternating Ring-Opening Metathesis Polymerization
ACS Macro Letters ( IF 5.1 ) Pub Date : 2020-01-17 , DOI: 10.1021/acsmacrolett.9b00936
Benjamin R Elling ₁ , Jessica K Su ₁ , Yan Xia ₁

Affiliation

We report the synthesis of degradable polyacetals and polyketals with controlled molecular weights and low dispersities using alternating ring-opening metathesis polymerization (AROMP) of 1,1-disubstituted cyclopropenes and dioxepins. Under optimized conditions, high degrees of alternation and controlled polymerization were achieved between nonpropagating cyclopropenes and low-strain dioxepins. The high degrees of alternation allowed the resulting polymers to fully degrade into small molecules under acidic conditions at variable rates depending on the acetal/ketal structures. This synthetic strategy illustrates the use of AROMP to incorporate functionalities into both the polymer backbone as well as the side chains.

中文翻译：

交替开环复分解聚合的可降解聚缩醛/缩酮

我们报告了使用 1,1-二取代环丙烯和二恶英的交替开环复分解聚合 (AROMP) 合成具有可控分子量和低分散性的可降解聚缩醛和聚缩酮。在优化的条件下，非增殖性环丙烯和低应变二恶英之间实现了高度交替和可控聚合。高度交替允许所得聚合物在酸性条件下以不同的速率完全降解成小分子，具体取决于缩醛/缩酮结构。这种合成策略说明了使用 AROMP 将功能性结合到聚合物主链和侧链中。

更新日期：2020-01-17

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