| 摘要 |
<p>Process for the production of 4-alkoxyacetoacetic acid esters from 4-chloro- or 4-bromoacetoacetic esters. The 4-chloro- or 4-bromoacetoacetic ester is reacted with a highly concentrated solution of an alkali alcoholate in alcohol having been concentrated at elevated temperatures, at temperatures of 50.degree. to 120.degree.C. At least 2.8 mole of the alkali alcoholate are used per mole of 4-chloro- or 4-bromo-acetoacetic ester.</p> |
