作者:Yu-Hsuan Wang、Peter Wan
DOI:10.1039/c4pp00454j
日期:2015.6
efficient photodecarboxylation of Ketoprofen (1) and the related derivatives 3 and 4 that generate the corresponding carbanion intermediates is presented. Carbanion intermediates are confirmed by deuterium incorporation in the trapped Michael adducts and by spectroscopic detection using laser flash photolysis (LFP). This novel anionic initiating system features excitation in the near UV and visible regions
提出了一种新的光引发体系,用于丙烯酸酯的阴离子聚合,它基于酮洛芬(1)以及产生相应碳负离子中间体的相关衍生物3和4的有效光脱羧作用。通过在捕获的迈克尔加合物中掺入氘和通过使用激光闪光光解(LFP)的光谱检测来确认碳负离子中间体。这种新颖的阴离子引发系统具有在紫外线附近和可见光区域的激发,光控活性聚合的潜在特性以及由光激发产生的无金属光引发剂,这与典型的阴离子聚合不同,后者是由热量和强碱金属碱引发的。