Environmentally Benign Reagent for Carbonylation or Methylation

Dimethylcarbonate (DMC) is an alternative to toxic and dangerous phosgene, dimethyl sulphate, or methyl chloride. DMC is easy to handle, offers economic advantages, and is a versatile derivatives performer. It uses readily available, low-cost raw material, a clean technology, and a clean product. The result is a route based on the oxidation of carbon monoxide with oxygen in methanol as follows:

This process operates at medium pressure using a copper chloride catalyst (see Figure 3.6.5).

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