Mild and regioselective azol-halogenation of alkenes

An economical and practical azol-halogenation protocol of alkenes, which provides a general approach to construct a series of structurally diverse β-halogenated amine derivatives, is reported. The wide substrate scope, good functional group tolerance, ease of large-scale preparation and potential for product derivatization make this reaction attractive. Mechanistic studies suggest that the azol-halogenation process might involve a radical halogenation followed by nucleophilic azolyation.

Iodine-Catalyzed Chemoselective Hydroamination Reaction Using 5-Mercaptotetrazoles Derivatives

Metal-free chemoselective hydroamination of styrene derivatives has been achieved with high chemoselectivity over sulfenylation of 1H-tetrazole-5-thiol using a catalytic amount of iodine. The scope of this methodology has been extended for the hydroamination of α-substituted styrene derivatives. This reaction involves a single-step C-N-bond formation under atom economical process. This eco-friendly method uses readily available and inexpensive iodine in a catalytic amount.

A novel metal-free amidosulfenylation of alkenes leading to β-azolyl sulfides

A novel and environmentally benign method for C-S and C-N bond formation by the direct amidosulfenylation of alkenes has been developed under metal-free conditions. Various alkenes and azoles were transformed into the corresponding β-azolyl sulfides in ionic liquids. The wide substrate scope, good functional group tolerance, and ease of operation make this reaction attractive for the synthesis of nitrogen- and sulfur-containing molecules.

A novel metal-free method for the selenocyanation of aromatic ketones to afford α-carbonyl selenocyanates

A rapid access to α-carbonyl selenocyanates has been developed through the direct selenocyanation of aromatic ketones.

Iodine-mediated regioselective synthesis of vinyl triflones from styrenes with CF3SO2Na

The iodine-mediated reaction of styrenes and CF₃SO₂Na proceeded regioselectively to give various potentially useful vinyl triflones.