作者:Chang Hoon Lee、Dino Villágran、Timothy R. Cook、Jonas C. Peters、Daniel G. Nocera
DOI:10.1002/cssc.201300068
日期:2013.8
[Co(bapa)]2+ scaffold reveals it to be a catalyst for the hydrogen evolution reaction (HER) in acetonitrile. Similar studies of the Hangman complex appear to be obscured by trace amounts of residual palladium remaining from the Suzuki coupling reaction to provide a cautionary note for the use of such cross‐coupling methodologies in the preparation of HER catalysts.
由4-取代基制备衍生化的2,12-二甲基-3,7,11,17-四氮杂双环[11.3.1] heptadeca-1(17),2,11,13,15-戊烷(巴巴)配体的金属配合物通过在金属卤化物或硝酸盐存在下与3,3'-二氨基二丙胺进行模板缩合来合成二乙酰吡啶衍生物。具有Pacman和Hangman支架的二乙酰吡啶衍生物是通过二乙酰吡啶的4位硼酸化以及随后的Suzuki与合适的Hangman或Pacman主链偶联而递送的。母体[Co(bapa)]的电化学检查2+支架显示它是乙腈中氢气释放反应(HER)的催化剂。Hangman配合物的类似研究似乎被Suzuki偶联反应中残留的痕量钯所掩盖,为使用此类交叉偶联方法制备HER催化剂提供了警告。