Reaction of Cyclic Ketals with Carbon Dioxide

33 Reaction of Cyclic Ketals with Carbon Dioxide 

The reaction of cyclic ketals with C02 (Equation 7.20) under supercritical conditions in organic solvents led to the production of a CC, under relatively mild conditions (10MPa, 370K) and using a suitable catalyst [201]. 

The coproduct cyclohexanone may react with 1,2-ethane-diol in the presence of FeCl3 to produce, in almost quantitative yield, the cyclic ketal (Equation 7.21), which can be reused. 

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