Issue 71, 2014

Mechanochemical C–H bond activation: rapid and regioselective double cyclopalladation monitored by in situ Raman spectroscopy

Abstract

The first direct mechanochemical transition-metal-mediated activation of strong phenyl C–H bonds is reported. The mechanochemical procedure, resulting in cyclopalladated complexes, is quantitative and significantly faster than solution synthesis and allows highly regioselective activation of two C–H bonds by palladium(II) acetate in asymmetrically substituted azobenzene. Milling is monitored by in situ solid-state Raman spectroscopy which in combination with quantum-chemical calculations enabled characterization of involved reaction species, direct insight into the dynamics and reaction pathways, as well as the optimization of a milling process.

Graphical abstract: Mechanochemical C–H bond activation: rapid and regioselective double cyclopalladation monitored by in situ Raman spectroscopy

Supplementary files

Article information

Article type
Communication
Submitted
10 Jun 2014
Accepted
17 Jul 2014
First published
17 Jul 2014

Chem. Commun., 2014,50, 10287-10290

Author version available

Mechanochemical C–H bond activation: rapid and regioselective double cyclopalladation monitored by in situ Raman spectroscopy

M. Juribašić, K. Užarević, D. Gracin and M. Ćurić, Chem. Commun., 2014, 50, 10287 DOI: 10.1039/C4CC04423A

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