(3aS,8aS)-( )-4,4, 8,8-tetrakis (3,5-dimethylphenyl) tetrahydro-2,2-diMethyl-6-phenyl-1,3-dioxolo[4,5-e]dioxaphosphepin, also known as (3aS,8aS)-( )-Tetraphenyltetrahydro-2, 2-dimethyl-6-phenyl-1, 3-dioxaphosphophorate, is an organophosphorus compound. The following is a description of the properties, uses, preparation and safety information of this compound:
Nature:
-Appearance: White solid.
-Melting point: About 150-152 ° C.
Use:
-It is a chiral ligand that can be used in the synthesis of catalysts.
-It can be used as a ligand for transition metal catalyzed reactions in organic synthesis.
-Can also be used to prepare other organophosphorus compounds.
Method:
A common preparation method is as follows:
1. The reaction first takes place the addition of hexane and 1,3-dioxepane-2-ene.
2. Add dry chloroform solution to the reaction mass.
3. An excess of aluminum chloride was added as a catalyst and the reaction mixture was cooled to -78°C.
4. Add Tris (3,5-dimethylphenyl) boron and raise the temperature to about 0°C.
5. Stirring of the reaction mixture was continued and the reaction was allowed to proceed for 1 hour at 0°C.
6. Add ether and filter the mixture to give the product.
Safety Information:
-This compound should be considered toxic.
-Necessary safety measures should be taken during operation, such as wearing suitable personal protective equipment.
-Avoid inhalation, touch skin and eye contact.
-Waste disposal is subject to local environmental regulations.