Ecole Polytechnique Federale De Lausanne

Dongbin Zhao

Paul Joseph Dyson

Zhaofu Fei

Novel chemical compounds of the general formulaKA,in which Kis a 5- or 6-membered heterocyclic ring having 1-3 hetereo atoms, which can be independently N, S, or O; with the proviso that at least one of the hetereo atoms must be a quaternized nitrogen atom having a &#x2014;R'CN substituent, wherein R&#x2032; is alkyl (Cto C); the heterocyclic ring having up to 4 or 5 substituents independently chosen from the moieties: These compounds can be used as industrial solvents, especially as ligands for efficient catalyst recycling.

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Basel, Switzerland

Dongbin Zhao