A comparison of the mechanisms of dimethyl carbonate (DMC) formation directly from carbon dioxide and methanol over CeO2versus over ZrO2 is made through in-situ Fourier transform infrared spectroscopy (FTIR).

An efficient palladium-catalyzed route for the synthesis of benzimidazole-fused phenanthridines from o-dibromoarenes and 2-arylbenzimidazoles is described. The sequentially accomplished reaction comprises intermolecular C-H arylation of 2-arylbenzimidazoles followed by an intramolecular N-arylation reaction promoted by the same Pd catalyst. This Pd-catalyzed double arylation provides a useful tool for the discovery of fluorescent materials.

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