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Using potassium iodide as a catalyst andm-chloroperbenzoic acid as an oxidant, an efficient catalytic procedure has been developed for the azidoselenenylation of alkenes with sodium azide and diselenides, and a series of corresponding β-azidoselenides, most of which are new compounds, have been prepared in moderate to good yields under mild reaction conditions. This in situ generation of the electrophilic selenenylating reagents with addition to alkenes is a stereospecificantiaddition, which occurs with a Markovnikov orientation. [ABSTRACT FROM AUTHOR]

A convenient procedure is developed for the preparation ofN-sulfonylbenzotriazoles from sodium sulfinates, benzotriazoles, and sodium bromide in the present ofm-chloroperbenzoic acid as oxidant. This radical sulfonylation proceeds efficiently at room temperature under neutral conditions, affording the correspondingN-sulfonylbenzotriazoles in moderate to good yields in a short time. [ABSTRACT FROM AUTHOR]