8-OXO-5,6,7,8-TETRAHYDRO-2-QUINOLONE AND PROCESS FOR THE PREPARATION THEREFOR

摘要

8-Oxo-5,6,7,8-tetrahydro-2-quinolone is a novel compound which is prepared by hydrolyzing the hydrochloride of the corresponding 8-chloro compound or the hydrobromide of the corresponding 8-bromo compound to give the corresponding 8-hydroxy compound, and dehydrogenating the latter one. The compound of the invention can be used in the preparation of coupling components for disperse dyes which are used to dye polyesters.