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Diphenyl carbonate (DPCO) is an important synthetic chemical that is widely used in the production of various plastics, resins, and other industrial products.
Its synthetic routes have been studied extensively, and several methods have been developed over the years to synthesize DPCO in high yields and with good quality.
One of the most commonly used methods for synthesizing DPCO involves the reaction of phenyl acid chloride with sodium hydroxide in the presence of a solvent, such as benzene or toluene.
The reaction produces DPCO as a colorless solid that is insoluble in water but soluble in organic solvents.
This method is simple and efficient, but it requires the handling of hazardous chemicals, such as phenyl acid chloride and sodium hydroxide.
Another synthetic route for DPCO involves the reaction of phenol with benzene in the presence of a Lewis acid catalyst, such as aluminum chloride or ferric chloride.
The reaction produces DPCO as a yellow solid that is soluble in organic solvents.
This method is less hazardous than the previous one, as it does not involve the handling of phenyl acid chloride or sodium hydroxide.
However, it requires the use of a Lewis acid catalyst, which can be expensive and difficult to dispose of.
A newer synthetic route for DPCO involves the use of a metal-organic framework (MOF) catalyst, such as zirconium-based MOFs.
The reaction involves the reaction of phenol with benzene in the presence of the MOF catalyst and a solvent, such as tetrachloroethylene or dichloromethane.
The MOF catalyst is highly efficient and can be easily recovered and reused, making this method more environmentally friendly than traditional synthetic routes.
In addition to the above-mentioned synthetic routes, DPCO can also be synthesized by the reaction of carbon dioxide with phenol in the presence of a metal catalyst, such as copper or zinc.
This method is known as the "carbon dioxide fixation" method and produces DPCO as a solid that is insoluble in water but soluble in organic solvents.
This method is of particular interest for its potential to be used in a sustainable and environmentally friendly manner.
Overall, the synthetic routes for DPCO have been extensively studied and have been refined over the years to produce DPCO in high yields and with good quality.
The choice of synthetic route depends on several factors, including the availability and cost of raw materials, the desired yield and purity of the product, and the environmental impact of the process.