In 2019,ACS Catalysis included an article by Zhu, Kai; Xu, Kai; Fang, Qi; Wang, Yi; Tang, Bencan; Zhang, Fengzhi. SDS of cas: 2623-87-2. The article was titled 《Enantioselective Synthesis of Axially Chiral Biaryls via Cu-Catalyzed Acyloxylation of Cyclic Diaryliodonium Salts》. The information in the text is summarized as follows:
We report here a Cu-catalyzed enantioselective acyloxylation of cyclic diaryliodonium salts. With readily available cyclic diaryliodonium salts and ubiquitous aliphatic or (hetero)aromatic carboxylic acids as the starting materials, various axially chiral acyloxylated 2-iodobiaryls were prepared in excellent yield and with excellent enantioselectivity (mostly 99% yield and 99% ee). D. functional theory calculations were conducted to reveal the stereo- and regioselectivities. This simple reaction protocol can be employed for the late-stage modification of some drug mols. Finally, by diversity-oriented transformations, these acyloxylated 2-iodobiaryl products can be easily transformed into diverse valuable functionalized biaryls that could be used as chiral ligands or functional materials.4-Bromobutanoic acid(cas: 2623-87-2SDS of cas: 2623-87-2) was used in this study.
4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).SDS of cas: 2623-87-2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary