Facile synthesis of N-1,2,4-oxadiazole substituted sulfoximines from N-cyano sulfoximines

A divergent approach has been successfully developed for the synthesis of N-1,2,4-oxadiazole substituted sulfoximines starting from N-cyano sulfoximines. This method has a wide degree of substrate scope that includes aryl, heteroaryl, alkyl, fluoroalkyl and saturated heterocyclic compounds. Excellent functional group tolerability was also observed. Extension of this methodology to nucleosides, amino acids and dipeptides was found to be successful. A gram scale reaction was also established. The major part of this method is metal free and the utility of environmentally friendly solvents such as 2-methyl THF and ionic liquids is an added advantage.

Synthesis ofN-sulfenyl-sulfoximines and -sulfenamides through a metal-free N–H/S–H dehydrocoupling reaction

A metal-free, iodine-catalyzed N–H/S–H dehydrocoupling reaction of sulfoximines and anilines with various thiols to construct sulfur–nitrogen bonds has been developed.

Mechanistic investigation of the NH-sulfoximination of sulfide. Evidence for λ6-sulfanenitrile intermediates

One-pot synthesis of NH-sulfoximines from sulfides was reported through fully described acetoxy- and methoxy-λ⁶-sulfanenitrile intermediates (¹H, ¹³C, ¹⁵N NMR and HRMS).

Synthesis of fully-substituted 1,2,3-triazoles via copper(i)-catalyzed three-component coupling of sulfoximines, alkynes and azides

A copper(i)-catalyzed three-component reaction of sulfoximines, alkynes and azides is described, affording a variety of 1,2,3-triazolyl-5-sulfoximines in moderate to good yields.

A divergent and metal free synthesis of sulfoximine tethered imidazoles, imidazopyridines, imidazothiazoles, imidazobenzothiazines, thiazoles and selenazoles

A divergent and metal free approach has been successfully developed for the synthesis of sulfoximine tethered heterocycles from a α-bromoalkanone building block.

Fe-Catalyzed oxidative spirocyclization of N-arylpropiolamides with silanes and TBHP involving the formation of C–Si bonds

A new iron-catalyzed oxidative spirocyclization of N-arylpropiolamides with silanes and TBHP leading to 3-silyl spiro[4,5]trienones is presented, which offers a practical route to introduction of silicon-centered radicals across the C–C triple bonds.

Copper-catalyzed N-thioetherification of sulfoximines using disulfides

A novel copper-catalyzed N-thioetherification of sulfoximines under mild reaction conditions was developed using readily available disulfides as the sulfur source.