Process for the production of high purity cyclopropylmethylketone

摘要

Recovery of high purity cyclopropylmethyl ketone (I) from a reaction product or other mixture containing (I), 4,5-dihydro-2-methylfuran (II), addition products of (II) and optionally other impurities formed in the synthesis of (I) from 2-acetyl-butyrolactone comprises at least one continuously operating rectification stage, in which the mixture is supplied to the rectifier from the side above a sump.