Garcia-Suarez, Eduardo J.; Khokarale, Santosh G.; van Buu, Olivier N.; Fehrmann, Rasmus; Riisager, Anders published the artcile< Pd-catalyzed ethylene methoxycarbonylation with Bronsted acid ionic liquids as promoter and phase-separable reaction media>, Safety of 4-(Pyridin-1-ium-1-yl)butane-1-sulfonate, the main research area is palladium catalysis ethylene methoxycarbonylation bronsted acid ionic liquids.
Bronsted acid ionic liquids (BAILs) were prepared and applied as combined acid promoters and reaction media in Pd-phosphine catalyzed methoxycarbonylation of ethylene to produce Me propionate. The BAILs served as alternatives to common mineral acids required for the reaction, e.g. methanesulfonic acid or sulfuric acid, resulting in high catalytic activity and selectivity towards Me propionate. In addition, the BAILs yielded a biphasic system with the product and provided stability to palladium intermediates avoiding the undesirable formation of palladium black after reaction. These special features enabled facile Me propionate separation and recovery of the ionic liquid catalyst system, thus allowing its re-use up to 15 times without apparent loss of catalytic activity or selectivity.
Green Chemistry published new progress about Acidity function, Hammett. 21876-43-7 belongs to class pyridine-derivatives, and the molecular formula is C9H13NO3S, Safety of 4-(Pyridin-1-ium-1-yl)butane-1-sulfonate.