SYNTHESIS OF ALPHA-HYDROXY KETONES.

摘要

THIS INVENTION RELATES TO A PROCESS FOR CONDENSING ALDEHYDES TO ALPHA - HYDROXYKETONES IN A LIQUID SYSTEM CONTAINING AN ALDEHYDE AND AN ACTIVE CONDENSATION CATALYST FORMED BY THE ABSTRACTION OF HX FROM A THIAZOLIUM SALT IN WHICH X IS THE ANION. THE REACTION IS CARRIED OUT IN THE ABSENCE OF A BASE (OTHER THAN THE ACTIVE CATALYST)AND THE ANION X. THE CATALYST IS RENDERED FREE OF THE UNDESIRABLE BASE AND THE ANION X BECAUSE THESE ARE THE CAUSE OF PREMATURE DEACTIVATION OF THE CATALYST.