Other Catalysts (Surfactants)

Total acetyl sugar generally refers to sugar derivatives in which all free hydroxyl (- OH) or amino (- NH2) in sugar molecules are protected by acetyl (- AC). Such molecules are an important synthetic intermediate in organic synthesis. Total acetyl sugar refers to sugar derivatives in which all free hydroxyl (- OH) or amino (- NH2) in sugar molecules are protected by acetyl (- AC). For example, 1,2,3,4,6-o-pentaacetyl-d-glucopyranose (galactose, mannose) is common in the laboratory. It is widely used in many fields, such as sugar biology, sugar chemistry, synthetic chemistry, pharmaceutical chemistry, material science, physical chemistry and so on. For example, diacetyl glucose is a potential surfactant; In the synthesis of sugar molecules as raw materials, the preparation of total acetyl sugar is often the first step to protect the exposed hydroxyl groups, which is of great significance for the follow-up reaction. Due to the wide application of total acetyl sugar in chemical experiments, the reagents such as total acetyl glucose, mannose and lactose prepared by the factory can be ordered directly on the market. However, for less experimental dosage, it is common to use the original sugar molecules to prepare acetyl sugar temporarily in the laboratory. At the same time, the total acetylation of monosaccharides such as glucose involves the preparation of chiral compounds, the application of thermodynamic and kinetic control theory, the influence of sugar end group effect on the product configuration, the influence of different catalysts on the product configuration ratio, as well as the basic experimental operations such as vacuum filtration, extraction and recrystallization. Therefore, learning to prepare total acetylsaccharides is of great significance for understanding the organic reaction mechanism and training the basic operations, It can be used as a good teaching content of College organic chemistry experiment course.

It is mainly used as raw material of surfactant.

Used for synthesizing fluorinated surfactants and synthesizing fluorinated resin intermediates.

Rhammnolipids are a type of biosurfactant with metabolic properties produced by Pseudomonas or Burkholderia. They are currently the most extensively studied and widely used biosurfactants. It combines good chemical and biological properties, has oil and water amphiphilicity, can reduce water surface tension, and can be used as a wetting agent, emulsifier, and foaming agent. This biosurfactant can be used under extreme conditions of temperature, pH, and salinity, and is non-toxic and biodegradable.