Abstract:
New and valuable chrysanthemumates, particularly esters having triunsaturated alcohols, and a process for controlling pests with these esters.
Abstract:
Process for the preparation of granular vitamin A esters by contacting the molten vitamin A esters with a cold organic liquid kept in motion.
Abstract:
Continuous production of axerophthol by reaction of axerophthyl acetate with a lower alcohol using guanidine as transesterification catalyst in two stages, alkyl acetate and some of the excess alcohol being distilled off in the first stage and the remainder of the alcohol being removed in the second stage by distillation with a hydrocarbon as entrainer.
Abstract:
Vitamin A palmitate is prepared from vitamin A alcohol and palmitoyl chloride in the presence of a tertiary amine in a continuous process in which vitamin A palmitate is obtained in high purity and almost quantitative yields.