[reaction: see text] Various ene-tosylynamides react with platinum(II) chloride and lead to bicyclic nitrogenated heterocycles. This unprecedented and easily operated process can be coupled with a hydrolysis of the intermediate cyclic tosylenamides in a one-pot transformation, which provides cyclobutanones.

Ring road: Cyclic sulfinates and sulfinamides can be synthesized by homolytic substitution to give alkyl and benzofused families of compounds. The presence of an additional heteroatom in the ring allows the preparation of sulfur‐based heterocycles that are useful synthetic intermediates (see scheme). The stereogenic sulfur atom transfers its chirality to prochiral radicals. TTMSS=tris(trimethylsilyl)silane, AIBN=azobisisobutyronitrile.