New Advances in Chemical Research in 2021. In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 18671-97-1, name is 2,6-Dichloroquinoxaline, introducing its new discovery. Synthetic Route of 18671-97-1
The present invention relates to a method for producing quizalofop-P-ethyl environment-friendly process, characterized in that the first hydroquinone with sodium hydroxide reaction to prepare the sodium salt of hydroquinone, with 2, 6 – dichloro quinozaline reaction, to obtain 4 – (6 – chloro – 2 kuikui oh linlin oxygen radical) phenol, then with paratoluene sulfonic acid ethyl lactate reaction to obtain the quizalofop-P-ethyl, herbicide then the grease of the alkaline hydrolysis, acidification, recovery 6 – chloro – 2 – hydroxy-quinoxaline. The synthesis process is advantageous in that the organic solvent in the reaction and post-processing, the system reduces the response of the alkaline, avoids the strong alkaline aqueous phase reactions the drawback of easy to produce impurities, reduces the raw material 2, 6 – dichloro quinozaline hydrolysis, so that the 4 – (6 – chloro – 2 kuikui oh linlin oxygen radical) to the phenol content of 98% or more, the yield of 92% or more, the recovery of the herbicide of the grease in the 6 – chloro – 2 – hydroxy-quinoxaline, not only reduces the discharge capacity of the solid waste, the protection of the environment, reduces the quizalofop-P-ethyl intermediate cost. (by machine translation)
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Synthetic Route of 18671-97-1. In my other articles, you can also check out more blogs about 18671-97-1
Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1641 | ChemSpider