-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
-
Cosmetic Ingredient
- Water Treatment Chemical
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
The synthetic routes of Hoggar are a series of chemical reactions used to produce the organic compound known as 2,4,6-triisocyanatobenzene, also known as TDI.
TDI is a key intermediate in the production of polyurethanes, a widely used class of synthetic materials with a variety of applications in the chemical industry.
The synthesis of TDI typically involves three main steps: the condensation of aniline and formaldehyde, the reaction of the resulting o-phenylenediamine with carbon disulfide, and the reaction of the resulting isocyanate with another molecule of aniline.
These steps can be carried out in a variety of ways, depending on the specific conditions and reagents used.
The first step in the synthesis of TDI is the condensation of aniline and formaldehyde.
This reaction involves the formation of a Schiff base, which is a types of organic compound that contains a functional group with a negative charge on one end and an aromatic ring on the other.
The Schiff base is then treated with a base, such as sodium hydroxide, to convert it into the corresponding amine.
This amine is then treated with carbon disulfide to form the isocyanate.
In the second step, the isocyanate is treated with another molecule of aniline to form the final product, TDI.
This reaction is known as a condensation reaction, in which two molecules react to form a larger molecule with the elimination of a small molecule, such as water or a molecule of carbon disulfide.
The synthesis of TDI via the Hoggar route is a well-established method that is widely used in the chemical industry.
TDI is a versatile intermediate that can be converted into a wide range of polyurethane products, such as foams, coatings, adhesives, and fibers.
These polyurethane products are used in a variety of applications, including construction, transportation, and consumer goods.
One of the advantages of the Hoggar route for the synthesis of TDI is that it is relatively simple and straightforward, making it a cost-effective method for large-scale production.
Additionally, the use of low-cost and readily available reagents such