3 years ago

Syntheses, Structures, and Reactions of Cyclometalated Rhodium, Iridium, and Ruthenium Complexes of N-Methoxy-4-nitrobenzamide

Syntheses, Structures, and Reactions of Cyclometalated
Rhodium, Iridium, and Ruthenium Complexes of N-Methoxy-4-nitrobenzamide
Baiquan Wang, Tao Zhou, Bin Li, Liubo Li, Haibin Song
The cyclometalated rhodium, iridium, and ruthenium complexes of N-methoxy-4-nitrobenzamide were synthesized by treatment of N-methoxy-4-nitrobenzamide with [Cp*MCl2]2] (M = Rh and Ir) or [(p-cymene)RuCl2]2 via C–H bond activation. The molecular structures of all these complexes were determined by single-crystal X-ray diffraction analysis. When the cyclometalated rhodium and ruthenium complexes were used as catalysts in the C–H bond functionalization reactions reported before, the desired products were obtained in high yields, proving that these cyclometalated complexes were probably the key catalytic intermediates of the C–H bond functionalization reactions of N-methoxybenzamide derivatives. The stoichiometric reactions of the cyclometalated rhodium, iridium, and ruthenium complexes with diphenylacetylene afforded the corresponding seven-membered metallacycles with insertion of two molecules of diphenylacetylene in 24, 6, and 20% yields, respectively, through the tandem reaction. However, the cyclometalated iridium complex could not catalyze the reaction of N-methoxy-4-nitrobenzamide with diphenylacetylene. This work provides a further understanding for the mechanisms of rhodium- and ruthenium-catalyzed C–H bond functionalization reactions of N-methoxybenzamide derivatives.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00879

DOI: 10.1021/acs.organomet.7b00879

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.