Method of preparing dialkyl dicarbonates

Details Method of preparing dialkyl dicarbonates Method of preparing dialkyl dicarbonates

C - Chemistry, Metallurgy

07

C

260/466.9

C07C 68/02 (2006.01) C07C 69/96 (2006.01)

Patent

CA 2004650

ABSTRACT OF THE DISCLOSURE A dialkyl dicarbonate (dialkyl pyrocarbonate) is prepared by contacting an alkyl haloformate (such as ethyl chloroformate) with an alkali metal carbonate (such as potassium carbonate) in the presence of a catalytic amount of a crown ether (such as 18 crown 6) and a solvating amount of a solvent (such as acetonitrile). The process of the invention is easy to carry out, it does not employ particularly hazardous materials, and provides a high yield of dicarbonate.

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