A process for preparing a hydantoin derivative.

摘要

An improved process is disclosed for preparing a hydantoin derivative from a hydrophobic aldehyde or ketone. In the process for preparing a hydantoin derivative by reaction of a hydrophobic aldehyde or ketone with ammonium, cyanide and carbonate ions in water, the reaction is carried out with said hydrophobic aldehyde or ketone emulsified in the presence of a surface-active agent or by vigorous mechanical agitation, whereby the corresponding hydantoin derivative is produced in excellent yields.