当前位置：
X-MOL 学术
›
Chem. Sci.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Phenylene-bridged bis(benzimidazolium) (BBIm2+): a dicationic organic photoredox catalyst
Chemical Science ( IF 7.6 ) Pub Date : 2020-10-07 , DOI: 10.1039/d0sc03958f Takuya Kodama 1 , Maiko Kubo 1 , Wataru Shinji 1 , Kei Ohkubo 2, 3 , Mamoru Tobisu 1
Chemical Science ( IF 7.6 ) Pub Date : 2020-10-07 , DOI: 10.1039/d0sc03958f Takuya Kodama 1 , Maiko Kubo 1 , Wataru Shinji 1 , Kei Ohkubo 2, 3 , Mamoru Tobisu 1
Affiliation
|
A dicationic photoredox catalyst composed of phenylene-bridged bis(benzimidazolium) (BBIm2+) was designed, synthesised and demonstrated to promote the photochemical decarboxylative hydroxylation and dimerisation of carboxylic acids. The catalytic activity of BBIm2+ was higher than that for a monocation analogue, suggesting that the dicationic nature of BBIm2+ plays a key role in these decarboxylative reactions. The rate constant for the decay of the triplet–triplet absorption of the excited BBIm2+ increased with increasing concentration of the carboxylate anion with a saturated dependence, suggesting that photoinduced electron transfer occurs within the ion pair complex composed of the triplet excited state of BBIm2+ and a carboxylate anion.
中文翻译：
亚苯基桥联双(苯并咪唑鎓) (BBIm2+)：一种双阳离子有机光氧化还原催化剂
设计、合成并证明了由亚苯基桥联双(苯并咪唑鎓) (BBIm 2+ )组成的双阳离子光氧化还原催化剂可促进羧酸的光化学脱羧羟基化和二聚。 BBIm 2+的催化活性高于单阳离子类似物，表明 BBIm 2+的双阳离子性质在这些脱羧反应中起着关键作用。激发态 BBIm 2+的三重态-三重态吸收的衰减速率常数随着羧酸根阴离子浓度的增加而增加，具有饱和依赖性，表明光诱导电子转移发生在由 BBIm 三重激发态组成的离子对复合物内2+和一个羧酸根阴离子。
更新日期：2020-10-17
中文翻译：
亚苯基桥联双(苯并咪唑鎓) (BBIm2+)：一种双阳离子有机光氧化还原催化剂
设计、合成并证明了由亚苯基桥联双(苯并咪唑鎓) (BBIm 2+ )组成的双阳离子光氧化还原催化剂可促进羧酸的光化学脱羧羟基化和二聚。 BBIm 2+的催化活性高于单阳离子类似物，表明 BBIm 2+的双阳离子性质在这些脱羧反应中起着关键作用。激发态 BBIm 2+的三重态-三重态吸收的衰减速率常数随着羧酸根阴离子浓度的增加而增加，具有饱和依赖性，表明光诱导电子转移发生在由 BBIm 三重激发态组成的离子对复合物内2+和一个羧酸根阴离子。
京公网安备 11010802027423号