New insights were reported for the hydroformylation in water (Cat. Lett. 1989), cobalt catalyzed ethylene polymerization (J. Am. Chem. Soc. 1990), reduction of hetroaromatics (J. Amer. Chem. Soc., 1992), hydrodechlorination of chloroaromatics (Chem. Commun. 1992), functionalization of hydrocarbons (Organometallics, 1993) and (J. Amer. Chem. Soc., 1997 and Inorg. Chem., 2000), copolymerization of propene with CO (Organometallics, 2000), synthesis of the insect repellent [1,C-14] N-methylneodecanamid (J. Labelled Comp. & Radiopharm., 2000), Friedel-Crafts acylations in ionic liquids (Green Chem. 2001), hydromethoxycarbonylation of 1,3-butadiene (Organometallics, 2003, 2011), cyclooligo-merization of isocyanates (Angew. Chem. Int. Ed., 2006), oxidative carbonylation of methanol (Collect. Czech. Chem. Comm., 2007), Beckmann rearrangement of cyclohexanone oxime (ChemSusChem 2008), acid catalyzed dehydration of fructose to 5-(hydroxymethyl)-furfural (Chem. Commun. 2012), acid catalyzed conversion of fructose to gamma-valerolactone (GVL) in GVL (ACS Catalysis, 2012), transfer-hydrogenation of levulinic acid (Organometallics, 2014), and activation of small molecules including hydrogen, methane and carbon monoxide. The last topic resulted in the first spectroscopic observation of the formyl cation in a condensed phase (Science, 1997) and the carbonylation of methane in superacids, which is still the most selective reaction of methane (Adv. Synth. & Cat. 2002).