The aza-Michael reaction is proving to be a practical, catalyst free method by which a variety of polymers, including silicones, can be cured. However, its adoption may be compromised by slow cure rates; for many applications is it not practical to accelerate cure by heating. OH groups on the amine, acrylate partner or solvent are known to lead to accelerated rates of aza-Michael reactions. The impact of the location of OH groups on reaction partners is demonstrated using both small molecules and small molecules plus telechelic silicones. While all OH groups are shown to increase reaction rates, a special enhancement is provided by β-hydroxyalkyl acrylate esters, which have significantly higher rates of reaction than simple acrylates per se, and yet higher reactivities in hydroxylic media. Using this motif, in the absence of solvents, silicone elastomer cure based on the β-hydroxyalkyl acrylate motif is facile and complete in less than 30 min at room temperature.

中文翻译：

---

β-羟烷基酯可加速 Aza-Michael 有机硅固化

aza-Michael 反应被证明是一种实用的、无催化剂的方法，通过该方法可以固化各种聚合物，包括有机硅。然而，它的采用可能会因治愈率缓慢而受到影响。对于许多应用来说，通过加热加速固化是不切实际的。已知胺、丙烯酸酯伙伴或溶剂上的 OH 基团会导致 aza-Michael 反应的速率加快。使用小分子和小分子加上遥爪硅树脂证明了 OH 基团的位置对反应伙伴的影响。虽然所有 OH 基团都显示出提高反应速率，但 β-羟烷基丙烯酸酯提供了特殊的增强，它比简单的丙烯酸酯本身具有明显更高的反应速率，但在羟基介质中具有更高的反应性。使用这个主题，在没有溶剂的情况下，