Ai, Liankun published the artcileCopper-mediated construction of benzothieno[3,2-b]benzofurans by intramolecular dehydrogenative C-O coupling reaction, Category: chlorides-buliding-blocks, the publication is RSC Advances (2021), 11(57), 36305-36309, database is CAplus and MEDLINE.
An efficient method to synthesize benzothieno[3,2-b]benzofurans such as I [R = H, 3-Cl, 3-t-Bu; R1 = H, 7,8-di-F, 8-Me, etc.] via intramol. dehydrogenative C-H/O-H coupling had been developed. Good to excellent yields (64-91%) could be obtained no matter if the substituted group was electron-donating or electron-withdrawing. Notably, three-to-six fused ring thienofuran compounds I could be constructed using this method. A reaction mechanism study showed that 1,1-diphenylethylene could be completely inhibited the reaction. Therefore, it was a radical pathway initiated by single electron transfer between the hydroxyl of the substrate and the copper catalyst.
RSC Advances published new progress about 1238196-66-1. 1238196-66-1 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Phenol,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-hydroxyphenylboronic acid, and the molecular formula is C6H6BClO3, Category: chlorides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics