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Choline peroxydisulfate (ChPS)

Choline peroxydisulfate is a environmentally benign, biodegradable ioniq liquid, that can be synthesized from choline chloride and potassium peroxydisulfate in acetone in 24 h at room temperature. ChPS is a versatile, thermally stable, non-volatile, task-specific ioniq liquid, that can be used for mild oxidations.

See also: ammonium peroxydisulfate, potassium peroxydisulfate, sodium peroxydisulfate, tetrabutylammonium peroxydisulfate

Recent Literature

The choline- and peroxydisulfate-based environmentally benign biodegradable oxidizing task-specific ionic liquid (TSIL) choline peroxydisulfate (ChPS) was synthesized and characterized. This reagent enables a selective oxidation of alcohols to aldehydes/ketones in very good yields and short reaction time under solvent-free mild reaction conditions without overoxidation to acid.
B. L. Gadilohar, H. S. Kumbhar, G. S. Shankarling, Ind. Eng. Chem. Res., 2014, 53, 19010-19018.

Choline peroxydisulfate - an oxidizing task-specific ionic liquid - enables the preparation of N,N-disubstituted hydroxylamines from secondary amines. This method offers operational simplicity, high selectivity, and green reaction conditions.
A. Banan, H. Valizadeh, A. Heydari, A. Moghimi, Synlett, 2017, 28, 2315-2319.