of main observation and conclusion Selective oxidative C-H sulfenylation of imidazopyridine heterocycles is achieved using an undivided electrolytic cell. The reaction avoids the use of stoichiometric amount of external chemical oxidant and produces hydrogen gas as the only byproduct. Both aryl and aliphatic thiols demonstrate good reactivity for C-S bond formation. www.cjc.wiley-vch.de

5One-pot template-free hydrothermal method was developed for the fabrication of BiVO 4 microsphere with tetragonal-monoclinic heterophase structure. XRD and HRTEM characterizations confirmed the formation of heterophase structure. It was found that the molar ratio of Bi/V and hydrothermal time were critical parameters in the yield of the spherical morphology and heterophase structure. Benefiting from the unique morphology and existence of heterophase, the as-prepared BiVO 4 microsphere exhibited 10 improved efficiency for RhB degradation in comparison with pure monoclinic scheelite-type BiVO 4 and tetragonal zircon-type BiVO 4 . EPR and PL-TA techniques proved that the photoinduced active species were involved in the photocatalytic degradation of RhB. The enhanced photocatalytic performance can be attributed to the more effective separation of photogenerated carriers generated in the heterophase BiVO 4 system, as evidenced by the electrochemical measurement. 15 65

Cobalt catalyzed electrochemical [4 + 2] annulation of sulfonamides with alkynes is demonstrated in this work, which provided a practical and environmentally friendly way to synthesize structurally diverse sultams.

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