Abstract: The present disclosure provides a composition for preparing aryl carboxylic acid; said composition comprising: at least one ionic liquid, at least one catalyst, at least one non-oxidizable polar solvent, and at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group. The present disclosure also provides a process for preparing aryl carboxylic acid.

Abstract: The present disclosure provides a composition for preparing aryl carboxylic acid; said composition comprising: at least one ionic liquid, at least one catalyst, at least one non-oxidizable polar solvent, and at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group. The present disclosure also provides a process for preparing aryl carboxylic acid.

Abstract: In the present disclosure, a process for separating aryl carboxylic acids from a mixture comprising a plurality of aryl carboxylic acids is provided, wherein the process comprising the steps of heating a first mixture that comprises at least two aryl carboxylic acids wherein each of said aryl carboxylic acids having a pre-determined liquefaction temperature and a pre-determined precipitation temperature, with at least one ionic compound, at a pre-determined temperature to obtain a liquefied composition; and cooling the liquefied composition under controlled temperature conditions to fractionally crystallize and precipitate an aryl carboxylic acid. The precipitated aryl carboxylic acid is isolated and the obtained mother liquor is subjected to iterated cooling steps until each of the remaining aryl carboxylic acids precipitates one by one. The mother liquor remains in liquefied form.

Abstract: A process for preparing alditol Acetals via a dehydrocondensation reaction is disclosed. The reaction is carried out by adding an aldehyde and an aldiol using a metal salt based ionic liquid as an acid catalyst. The ionic liquid used in the process is prepared by dissolving a hydrogen donor and a compound providing counter ion in a solvent.

Abstract: A method for preparing an ionic compound by mixing at least one compound of formula CxAy-zH2O (1) with at least one hydrogen donor and heating the mixture obtained is provided. The said ionic compound remains in a physical state selected from the group consisting of liquid and semisolid at a temperature below 150° C., preferably below 125° C.

Abstract: A process for the preparation of 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) and 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) via a dehydrocondensation reaction is disclosed. The reaction is carried out between an aldehyde and an alditol in a mole ratio of 2:1 wherein ionic fluid is used as the acidic catalyst and/or reaction medium. The ionic fluid used in accordance with the present invention is quaternary ammonium salt based ionic liquid.

Abstract: In the present disclosure, a process for separating aryl carboxylic acids from a mixture comprising a plurality of aryl carboxylic acids is provided, wherein the process comprising the steps of heating a first mixture that comprises at least two aryl carboxylic acids wherein each of said aryl carboxylic acids having a pre-determined liquefaction temperature and a pre-determined precipitation temperature, with at least one ionic compound, at a pre-determined temperature to obtain a liquefied composition; and cooling the liquefied composition under controlled temperature conditions to fractionally crystallize and precipitate an aryl carboxylic acid. The precipitated aryl carboxylic acid is isolated and the obtained mother liquor is subjected to iterated cooling steps until each of the remaining aryl carboxylic acids precipitates one by one. The mother liquor remains in liquefied form.

Abstract: This invention is directed to a process for preparation of acetal derivatives, 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) and 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) by carrying out a dehydrocondensation reaction between an aldehyde and an alditol using an aqueous ionic fluid as the acid catalyst.

Abstract: A process for preparing alditol Acetals via a dehydrocondensation reaction is disclosed. The reaction is carried out by adding an aldehyde and an aldiol using a metal salt based ionic liquid as an acid catalyst. The ionic liquid used in the process is prepared by dissolving a hydrogen donor and a compound providing counter ion in a solvent.

Abstract: A process for the preparation of 1,3:2,4-bis (4-methylbenzylidene) sorbitol (MDBS) and 1,3:2,4-bis (3,4-dimethylbenzylidene) sorbitol (DMDBS) via a dehydrocondensation reaction is disclosed. The reaction is carried out between an aldehyde and an alditol in a mole ratio of 2:1 wherein ionic fluid is used as the acidic catalyst and/or reaction medium. The ionic fluid used in accordance with the present invention is quaternary ammonium salt based ionic liquid.

Abstract: A method for preparing an ionic compound by mixing at least one compound of formula CxAy-zH2O (1) with at least one hydrogen donor and heating the mixture obtained is provided. The said ionic compound remains in a physical state selected from the group consisting of liquid and semisolid at a temperature below 150° C., preferably below 125° C.

Abstract: This invention is directed to a process for preparation of acetal derivatives, 1,3:2,4-bis (3,4-dimethylbenzylidene)sorbitol (DMDBS) and 1,3:2,4-bis (4-methylbenzylidene)sorbitol (MDBS) by carrying out a dehydrocondensation reaction between an aldehyde and an alditol using an aqueous ionic fluid as the acid catalyst.