Decarboxylative Borylation and Cross-Coupling of (Hetero)aryl Acids Enabled by Copper Charge Transfer Catalysis
作者:Nathan W. Dow、P. Scott Pedersen、Tiffany Q. Chen、David C. Blakemore、Anne-Marie Dechert-Schmitt、Thomas Knauber、David W. C. MacMillan
DOI:10.1021/jacs.2c01630
日期:2022.4.13
We report a copper-catalyzed strategy for arylboronic ester synthesis that exploits photoinduced ligand-to-metal charge transfer (LMCT) to convert (hetero)aryl acids into aryl radicals amenable to ambient-temperature borylation. This near-UV process occurs under mild conditions, requires no prefunctionalization of the native acid, and operates broadly across diverse aryl, heteroaryl, and pharmaceutical
A novel approach to functionalised pyridazinone arrays
作者:Matthew D. Helm、Andrew Plant、Joseph P. A. Harrity
DOI:10.1039/b613223e
日期:——
A series of 3,6-dichloro-1H-pyridazin-4-ones have been prepared via the cycloaddition of 3,6-dichlorotetrazine with alkynylboronates, and their employment as useful synthetic intermediates was highlighted through a selection of highly regioselective C–O, C–S and C–C bond forming reactions.