Photoinduced decarboxylation of 3-(N-phthalimido)adamantane-1-carboxylic acid and radical addition to electron deficient alkenes
作者:Margareta Horvat、Kata Mlinarić-Majerski、Axel G. Griesbeck、Nikola Basarić
DOI:10.1039/c0pp00357c
日期:2011.4
Direct and sensitized excitation of 3-(N-phthalimido)adamantane-1-carboxylic acid (1) leads to the population of the triplet state that, in the presence of a base, decarboxylates, giving N-(1-adamantyl)phthalimide (2) cleanly and efficiently (Φ = 0.11). The radical initially formed by decarboxylation adds regiospecifically to electron deficient alkenes, whereas radical addition was not observed for
3-(N-邻苯二甲酰亚胺基)金刚烷-1-羧酸(1)的直接和敏化激发会导致三重态的存在,该三重态在存在碱的情况下会脱羧,得到N-(1-金刚烷基)邻苯二甲酰亚胺(2)干净有效(Φ = 0.11)。最初通过脱羧形成的自由基将区域特异性地添加到缺电子的烯烃中,而未观察到富含电子的烯烃的自由基加成。自由基加成还可以应用于不带有金刚烷的分子,其中电子给体(羧酸盐)和受体(邻苯二甲酰亚胺)由刚性垫片隔开。光脱羧诱导的邻苯二甲酰亚胺衍生物1到烯烃的自由基加成反应以良好或优异的产率进行,代表了一种温和而有效的C–C键形成方法。