Carbon Dioxide → Diphenyl carbonate

Participants

Reaction Conditions

Reaction Steps

The procedure of Example 1 was repeated except there was utilized 50.5 gram of phenol, 4.46 grams of diphenylether, 0.275 grams of benzoquinone. 1.5 grams of tetrabutylammonium bromide, 0.062 gram of palladium diacetate, and 0.042 gram of cobalt diacetate. The reactor vessel was then again sealed and purged with 4 times 600 psi of carbon dioxide. The reaction vessel was then charged with 620 psi of carbon dioxide (0.431 mole), 380 psi of oxygen and 800 of psi of carbon monoxide, to provide a total pressure at room temperature of about 1800 psi. The reactor was then heated to 100° C. After one hour, the reactor was depressurized to 1000 psi and then recharged with 380 psi of oxygen and 760 psi of carbon monoxide to produce a total pressure of 2140 psi. After 2 hours of reaction, the reaction vessel was exhausted to 900 psi then repressurized with 450 psi of oxygen and 700 psi of carbon monoxide to provide a total pressure at 100° C. of 2050 psi. The reactor was then allowed to cool to room temperature after 3 hours of reaction. There was obtained 10.9 grams of diphenyl carbonate or a 19% yield.

Provenance & Evidence