Li, Renhe published the artcileRedox-Neutral ortho Functionalization of Aryl Boroxines via Palladium/Norbornene Cooperative Catalysis, Quality Control of 209919-30-2, the publication is Chem (2019), 5(4), 929-939, database is CAplus and MEDLINE.
A redox-neutral ortho functionalization of aryl boroxines via Pd/NBE catalysis was reported. An electrophile, such as carboxylic acid anhydrides or O-benzoyl hydroxylamines, was coupled at the boroxine ortho position, and a proton as the second electrophile was introduced at the ipso position. This reaction did not require extra oxidants or reductants and avoided stoichiometric bases or acids, thereby tolerating a wide range of functional groups. In particular, orthogonal chemoselectivity between aryl iodide and boroxine moieties was demonstrated, which could be used to control reaction sequences. Finally, a deuterium-labeling study supported the ipso protonation pathway. This unique mechanistic feature could inspire the development of a new class of Pd/NBE-catalyzed transformations.
Chem 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 C7H8BClO2, Quality Control of 209919-30-2.
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