| 摘要 |
The invention relates a process for the carbonylation of epoxides by reaction with carbon monoxide in the presence of a catalyst system containing a source of cobalt and a hydroxy substituted pyridine compound, whereby beta -propiolactones and/or derivatives thereof, such as beta -propiolactone polymers, beta -hydroxy carboxylic acids and esters, and beta -alkoxy carboxylic acids and esters, are produced.
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