Quality Control of 2,6-Dichlorobenzoic acid. I found the field of Chemistry very interesting. Saw the article Phosphine-Catalyzed Chemoselective [4+3] Cycloaddition of Alminine Esters and beta ‘-acetoxy Allenoates for Divergent Synthesis of Azepines published in 2020.0, Reprint Addresses Zhou, QF (corresponding author), China Pharmaceut Univ, Dept Organ Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R China.. The CAS is 50-30-6. Through research, I have a further understanding and discovery of 2,6-Dichlorobenzoic acid.
Text. A general method for the synthesis of structural diversity and complexity of azepines from aldimine esters and beta ‘-acetoxy allenoates is reported. Under phosphine catalysis, a [4+3] cycloaddition for the formation of 1,3-dihydro-2H-azepine-2,2,4-tricarboxylates was achieved with broad substrate scope under mild reactions. A switchable process was given and a variety of important 2,3-dihydrochromeno[4,3-b]azepin-6(1H)-ones were selectively formed when the reaction was performed in the presence of Cs2CO3 and PPh3, which involved an intramolecular ester group migration and subsequent lactonization of 1,3-dihydro-2H-azepine-2,2,4-tricarboxylates. Besides easy handle process, high synthetic value of resulting products, it is worth to note that this work showed the novel example of 1,5-ethoxycarbonyl migration.
Quality Control of 2,6-Dichlorobenzoic acid. About 2,6-Dichlorobenzoic acid, If you have any questions, you can contact Dai, ZH; Zhu, J; Wang, JH; Su, WB; Yang, FL; Zhou, QF or concate me.
Reference:
Chloride – Wikipedia,
,Chlorides – an overview | ScienceDirect Topics