135861-56-2

Usage

Uses

Used in Research and Development:
1,3:2,4-Bis(3,4-dimethylobenzylideno) sorbitol is used as a research chemical for the development and study of new materials, compounds, and pharmaceuticals. Its unique structure and properties make it a valuable tool in the field of chemical research.
Used in Pharmaceutical Industry:
1,3:2,4-Bis(3,4-dimethylobenzylideno) sorbitol is used as an intermediate or building block in the synthesis of various pharmaceutical compounds. Its versatility in chemical reactions allows for the creation of new drugs with potential therapeutic applications.
Used in Material Science:
In the field of material science, 1,3:2,4-Bis(3,4-dimethylobenzylideno) sorbitol is used as a component in the development of novel materials with specific properties. Its incorporation into polymers or other materials can lead to improved characteristics such as enhanced stability, strength, or functionality.
Used in Cosmetics Industry:
1,3:2,4-Bis(3,4-dimethylobenzylideno) sorbitol may also find applications in the cosmetics industry, where it can be used as an ingredient in the formulation of various cosmetic products. Its properties may contribute to improved texture, consistency, or performance of the final product.

Flammability and Explosibility

Nonflammable

Synthetic route

3,4-dimethylbenzaldehyde (5973-71-7) + D-sorbitol (50-70-4) → 1,3:2,4-di-O-(3,4-dimethylbenzylidene)-D-sorbitol (135861-56-2)

Conditions	Yield
toluene-4-sulfonic acid In acetonitrile at 20℃; for 12h; Product distribution / selectivity;	99%
With trimethyl orthoformate; bismuth(lll) trifluoromethanesulfonate In methanol at 20℃; for 48h; Product distribution / selectivity;	99%
With trimethyl orthoformate; bismuth(lll) trifluoromethanesulfonate In methanol at 20℃; for 49h; Product distribution / selectivity; Heating / reflux;	99%

Upstream product

• 5973-71-7 3,4-dimethylbenzaldehyde 
• 50-70-4 D-sorbitol 

Relevant academic research and scientific papers

Method of preparing powdery diacetal clarifying agent

Provided is a method of preparing a powdery diacetal clarifying agent, which comprises mixing an aromatic aldehyde, a polyol, and an acid catalyst in an organic polar solvent, adding a hydrogenating agent and an inorganic silicon-containing agent into the foregoing mixture, and filtering the mixture. The powdery diacetal clarifying agent prepared by the method can have excellent flowability, dispersability, thermal resistance, and color stability. Accordingly, the powdery diacetal clarifying agent does not release stinking odor and incur yellowing at high temperature, allowing the plastic articles to have improved appearance and visual appeal.

Method of preparing diacetal-based clarifying agent

Provided is a method of preparing a diacetal-based clarifying agent, comprising mixing aromatic aldehyde and polyol in the presence of an acid catalyst to undergo a condensation reaction, and adding a safe hydrogenating agent with the mixture. After filtering, drying and grinding steps, a diacetal-based clarifying agent with high purity is obtained by the method. When applying the diacetal-based clarifying agent to the plastic process, the final plastic product not only eliminates the release of stinking odor, but also improves the color stability at high temperature, such that the application of the final plastic product can be improved.

Process For Preparation Of Acetals

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.

Process For The Preparation of Alditol Acetals

The present invention is directed to a process for the preparation of 1,3:2,4-bis (4-methylbenzylidene) sorbitol (MDBS) and 1,3:2,4-bis (4-dimethylbenzylidene) sorbitol (DMDBS) by dehydrocondensating an aldehyde and an alditol using a hydrophobic ionic liquid as an acid catalyst. The ionic liquid used in the accordance with the process of the present invention is a phosphonium ion based ionic liquid.

PROCESS FOR PREPARATION OF ACETALS

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 liquid is used as the acidic catalyst and/or reaction medium. The ionic liquid used in the process is quaternary ammonium salt based ionic liquid.

PROCESS FOR PREPARING ALDITOL ACETALS

A process for preparing alditol acetals via a dehydrocondensation reaction is disclosed. The reaction is carried out by adding an aldehyde and an alditol 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.

Method for preparing acetal-containing compositions

An acetal compound may be formed by the method of reacting a substitiuted or unsubstituted benzaldehyde, a polyhydric alcohol, and an at least one acid catalyst at ambient temperatures, in a homogenous reaction media in the presence of at least one water miscible organic solvent. The molar ratio of the acid catalyst to the benzaldehyde may be less than about 0.6 to 1, respectively, of acid catalyst to benzaldehyde.