作者:Scott R. Zavada、Joseph C. Furgal、Nathan D. Wood、Timothy F. Scott
DOI:10.1002/pola.28507
日期:2017.4.15
capable of generating radicals in the presence of atmospheric oxygen and thiol groups, the reaction extents achievable were lower than desired owing to the presence of unwanted side reactions that would quench radical production and, subsequently, suppress polymerization. Moreover, we found that complex interactions between the pyrrolopyrazine‐thione, its precursor, oxygen, and thiol groups determine whether
源自oltipraz的吡咯并吡嗪-硫酮已被研究为化学预防剂,可通过氧化还原循环在硫醇和氧存在下提供自由基,这一属性表明其适合作为氧介导聚合反应的引发剂。在这里,我们探索了由前体原位生成的吡咯并吡嗪-硫酮的利用,作为自由基介导的硫醇-烯聚合反应的引发剂。尽管吡咯并吡嗪-硫酮在大气氧和硫醇基团的存在下能够产生自由基,但由于存在不希望有的副反应,该副反应会终止自由基的产生并抑制聚合反应,因此可达到的反应程度低于预期。 。此外,我们发现吡咯并吡嗪-硫酮,其前体,氧和硫醇基团决定了淬灭反应是否优于有利于聚合的反应。©2016 Wiley Periodicals,Inc. J. Polym。科学,A部分:Polym。化学2017年,55,1373年至1382年