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Nickela-2-oxazolidinones, formed by oxidative coupling of imines and CO 2 with Ni 0 , react with LiCl under mild conditions (4 °C, 1 atm) to afford vicinal diamines in up to 89% yield. The reaction is the first organometallic example of reductive imine coupling requiring CO 2 . In this system, CO 2 is participatory and is not incorporated in the reaction products. These results represent an important addition to our understanding of the reactivity of metallacycles derived from CO 2 and unsaturated compounds.

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Metal-Free Oxidative Lactonization of Carbohydrates Using Molecular Iodine. -An operationally simple protocol is developed for the oxidation of lactols to lactones by molecular iodine. -(FUSARO, M. B.; CHAGNAULT*, V.; JOSSE, S.; POSTEL, D.; Tetrahedron 69 (2013) 29, 5880-5883, http://dx.