The author of 《Pyridine-bridged bifunctional organocatalysts for the synthesis of cyclic carbonates from carbon dioxide》 were Liu, Quan-Yao; Shi, Lei; Liu, Ning. And the article was published in Journal of Chemical Research in 2019. Quality Control of 2-Hydroxyphenylboronic acid The author mentioned the following in the article:
Hydroxyl- and carboxyl-functionalized imidazolium halides were used as efficient bifunctional organocatalysts for the synthesis of cyclic carbonates from CO2 and epoxides under mild reaction conditions. Control experiments suggested that the cycloaddition reaction was realized by the combination of the nucleophilic halide anions with hydroxyl and carboxyl groups as hydrogen bond donors. Moreover, the bifunctional organocatalysts was easily recycled five times by simple filtration; however, a loss of activity was observed In the experimental materials used by the author, we found 2-Hydroxyphenylboronic acid(cas: 89466-08-0Quality Control 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. Quality Control of 2-Hydroxyphenylboronic acid
Referemce:
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