PREPARATION OF SUBSTITUTED OR UNSUBSTITUTED PHENYLGLYOXALS.

摘要

A substituted or an unsubstituted phenylglyoxal is prepared from a corresponding substituted or unsubstituted acetophenone by oxidizing the substituted or unsubstituted acetophenone to form a corresponding substituted or unsubstituted phenylglyoxalacetal in a reactor and hydrolyzing the phenylglyoxalacetal in the same reactor to form the substituted or unsubstituted phenylglyoxal. Furthermore, the substituted phenylglyoxal is prepared from a corresponding substituted or unsubstituted acetophenone by reacting the substituted or unsubstituted acetophenone in water with a source of a nitrosonium ion in the presence of a strong acid.