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. HPLC of Formula: C7H4Cl2O2, 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.
Welcome to talk about 50-30-6, If you have any questions, you can contact Dai, ZH; Zhu, J; Wang, JH; Su, WB; Yang, FL; Zhou, QF or send Email.. HPLC of Formula: C7H4Cl2O2
Reference:
Chloride – Wikipedia,
,Chlorides – an overview | ScienceDirect Topics