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An efficient regioselective sp3 C–H azidation is developed using CuBr as the catalyst and Zhdankin azidoiodinane as the “N3” source. Under simple and mild reaction conditions, the azido group could be successfully incorporated into the sp3 C–H alkyl substituents of indoles and tetrahydrocarbazoles.

A convenient and efficient approach for the difunctionalization of alkenylpyridine N-oxides through the tandem addition/Boekelheide rearrangement has been developed. The C–O and C–X (S, O, Cl) bonds are constructed simultaneously at the α- and β-positions under mild reaction conditions in 100% atom economy, which complements previously reported α- or β-functionalizations.

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Novel 10π-electron cyclic amidines with excellent fluorescence properties were synthesized by a general and efficient 6π-electrocyclic ring closure of ketenimine and imine starting from N-sulfonyl triazoles and arylamines.

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For several reasons, particularly due to the mismatch in the feeder impedance, accurate power sharing in islanded microgrids is a challenging task. To get around this problem, a distributed event-triggered power sharing control strategy is proposed in this paper. The suggested technique adaptively regulates the virtual impedances at both fundamental positive/negative sequence and harmonic frequencies and, therefore, accurately share the reactive, unbalanced, and harmonics powers among distributed generation (DG) units. The proposed method requires no information of feeder impedance and involves exchanging information among units at only eventtriggered times, which reduces the communication burden without affecting the system performance. The stability and inter-event interval are analyzed in this paper. Finally, experimental results are presented to validate the effectiveness of the proposed scheme.