Recently I am researching about FORMAL 3+2+2 CYCLOADDITION; RING-CLOSING METATHESIS; FACILE SYNTHESIS; ANNULATION; ALKYNES; IMINES; GENERATION; ALLENES; ACCESS; 1,2,3-TRIAZOLES, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21102179, 21572271]; Qing Lan Project of Jiangsu Province; ‘Double First-Class’ University project [CPU2018GY35, CPU2018GF02]; Postgraduate Scientific Research Innovation Projects of Jiangsu Province [KYCX19_0624]. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Dai, ZH; Zhu, J; Wang, JH; Su, WB; Yang, FL; Zhou, QF. The CAS is 50-30-6. Through research, I have a further understanding and discovery of 2,6-Dichlorobenzoic acid. Category: chlorides-buliding-blocks
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.
Category: chlorides-buliding-blocks. 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