Abstract New 1,10-phenanthroline derivatives bearing diarylamino and heteroaromatic moieties in the 3,8-position have been prepared by a palladium-catalyzed C–N bond formation reaction. Formation of Ru(II) complexes with the chelating ligands and their photophysical and electrochemical redox properties have been examined.
As a new energy source that could replace petroleum, the global reserves of methane hydrate (combustible ice) are estimated to be approximately 20 000 trillion cubic meters. A large amount of methane hydrate has been found under the seabed, but the transportation and storage of methane gas far from coastlines are technically unfeasible and expensive. The direct conversion of methane into value‐added
作为可以替代石油的新能源,甲烷水合物(可燃冰)的全球储量估计约为2万亿亿立方米。在海床下发现了大量的甲烷水合物,但是远离海岸线的甲烷气体的运输和储存在技术上是不可行的,而且价格昂贵。将甲烷直接转化为增值化学品和液体燃料是非常可取的,但仍具有挑战性。本文中,我们基于具有高比表面积和良好的热化学稳定性的多孔聚咔唑制备了一系列铱配合物。通过结构调整,我们优化了它们对甲烷选择性单硼化的催化活性。这些催化剂之一(CAL-3-Ir)可以生产甲基硼酸频哪醇酯(CH 3Bpin)在9小时内的收率为29%,周转频率(TOF)约为14 h -1。由于其孔径有利于单硼化产物,因此它对单硼化具有很高的化学选择性(CH 3 Bpin:CH 2(Bpin)2 = 16:1)。