Zhu, Kai published the artcileSynthesis of 2,2′-Dihalobiaryls via Cu-Catalyzed Halogenation of Cyclic Diaryliodonium Salts, Safety of 4-Chloro-2-methylphenylboronic acid, the publication is Organic Letters (2020), 22(23), 9356-9359, database is CAplus and MEDLINE.
We report an efficient method for the preparation of various 2,2′-dihalobiaryls from cyclic diaryliodonium salts. With cheap halogen sources as starting materials, a broad range of 2,2′-diiodobiaryls, 2-bromo-2′-iodobiaryls, and 2-chloro-2′-iodobiaryls were obtained under mild reaction conditions. More importantly, a chiral copper-bisoxazoline catalyst system was further developed for the preparation of axially chiral 2,2′-dihalobiaryls in excellent yields and enantioselectivities, which can serve as versatile precursors for the synthesis of various chiral ligands.
Organic Letters published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C22H18O2, Safety of 4-Chloro-2-methylphenylboronic acid.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics