Quinclorac (3,7-dichloro-8-quinolinecarboxylic acid) is commercially produced from the partial oxidation of 3,7-dichloro-8-(chloromethyl)quinolone by nitric acid in 98% sulfuric acid. Such technology suffers from some shortcomings, such as the discharge of NO_x and wastewater, and the formation of nitro compounds. Oxygen is a clean, cheap oxidant. The key to realizing the production of quinclorac by oxidizing 3,7-dichloro-8-(chloromethyl)quinolone with oxygen is the development of an efficient catalyst.

中文翻译：

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氧将3,7-二氯-8-(氯甲基)喹诺酮氧化为喹氯酸

喹氯酸（3,7-二氯-8-喹啉甲酸）是由硝酸在 98% 硫酸中部分氧化 3,7-二氯-8-（氯甲基）喹诺酮制成的。这种技术存在一些缺点，例如NO _x和废水的排放，以及硝基化合物的形成。氧气是一种清洁、廉价的氧化剂。实现氧氧化3,7-二氯-8-(氯甲基)喹诺酮生产喹氯酸的关键是开发高效催化剂。