Li, Renhe published the artcileRedox-Neutral ortho Functionalization of Aryl Boroxines via Palladium/Norbornene Cooperative Catalysis, Category: alcohols-buliding-blocks, 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 1370732-71-0. 1370732-71-0 belongs to alcohols-buliding-blocks, auxiliary class Boronic acid and ester, name is (3-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanol, and the molecular formula is C14H21BO3, Category: alcohols-buliding-blocks.
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