Ai, Liankun; Ajibola, Ibrahim Yusuf; Li, Baolin published their research in RSC Advances in 2021. The article was titled 《Copper-mediated construction of benzothieno[3,2-b]benzofurans by intramolecular dehydrogenative C-O coupling reaction》.Application In Synthesis of 2-Hydroxyphenylboronic acid The article contains the following contents:
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. In the experimental materials used by the author, we found 2-Hydroxyphenylboronic acid(cas: 89466-08-0Application In Synthesis of 2-Hydroxyphenylboronic acid)
2-Hydroxyphenylboronic acid(cas: 89466-08-0) belongs to acyl phenylboronic acid. Phenylboronic acid (PBA) has been used to extract β-blockers (a class of aminoalcohol-containing drugs) from aqueous solution, rat, and human plasma. Application In Synthesis of 2-Hydroxyphenylboronic acid
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts