PROCEDE DE PREPARATION DE 4-HYDROXYQUINOLEINES ET/OU FORMES TAUTOMERES

摘要

The invention concerns a method for preparing 4-hydroxyquinolines and/or tautomeric forms. More particularly, the invention concerns 5,7-dichloro-4-hydroxyquinoline and/or its tautomeric forms. The invention is characterised in that it consists in heating a 4-hydroxyquinolinecarboxylic acid ester in the presence of water and in the absence of a catalyst.