Base-activated Sulfur

Base activated sulfur can serve as an interesting system to enable the synthesis of a variety of compounds. With sulfur being a waste product of the petrochemical industry, it is of high interest to implement sulfur into chemically valuable materials. In our group, the activation of sulfur with a base has been used to access a variety of structures in a more sustainable fashion (i.e. be reducing waste and/or avoiding toxic reagents) including isothiocyanates, thiocarbamates, thiourea organocatalysts, polythiosemicarbazones and alkenes.

Working on this topic: Peter Conen, Andreas Ganzbuhl, Roman Nickisch, Jonas Wolfs

Recent publications

Nickisch, R.; Conen, P.; Meier, M. A. R. (2022). Polythiosemicarbazones by Condensation of Dithiosemicarbazides and Dialdehydes. Macromolecules, 55 (8), 3267–3275. doi:10.1021/acs.macromol.2c00409

Wolfs, J.; Nickisch, R.; Wanner, L.; Meier, M. A. R. (2021). Sustainable One-Pot Cellulose Dissolution and Derivatization via a Tandem Reaction in the DMSO/DBU/CO2 Switchable Solvent System. Journal of the American Chemical Society, 143 (44), 18693−18702. doi:10.1021/jacs.1c08783

Nickisch, R.; Conen, P.; Gabrielsen, S. M.; Meier, M. A. R. (2021). A more sustainable isothiocyanate synthesis by amine catalyzed sulfurization of isocyanides with elemental sulfur. RSC Advances, 11 (5), 3134–3142. doi:10.1039/d0ra10436a