Suzuki–Miyaura-type reaction of benzoyl fluorides with alkyl boronic acids to synthetic ketone was revealed by cooperative N-heterocyclic carbene (NHC) and photoredox catalysis. Various alkyl boric acids can be converted into alkyl radicals without external oxidants or activators. Moreover, the catalytic system was feasible for the difunctionalization of styrenes via a radical relay process. Mechanistic
Photoinduced Decarboxylative Borylation of <i>N</i>-Hydroxyphthalimide Esters with Hypoboric Acid
作者:Bálint Nagy、Zsombor Gonda、Tamás Földesi、Péter Pál Fehér、András Stirling、Gergely L. Tolnai、Zoltán Novák
DOI:10.1021/acs.orglett.4c00511
日期:2024.3.22
photochemical transformation in which activated primary, secondary, and tertiary alkylcarboxylicacids were converted into the corresponding boronic esters in the absence of catechol and any added photocatalyst. The procedure relies on the utilization of hypoboric acid and redox-active esters of alkylcarboxylicacids to ensure a simple and economic procedure. Quantum chemical calculations and mechanistic
<i>B</i>-Alkyl Suzuki−Miyaura Cross-Coupling Reactions with Air-Stable Potassium Alkyltrifluoroborates
作者:Gary A. Molander、Chang-Soo Yun、María Ribagorda、Betina Biolatto
DOI:10.1021/jo0343331
日期:2003.7.1
palladium-catalyzed cross-coupling reaction of substitutedpotassium alkyltrifluoroborates with arylhalides and aryl triflates proceeds readily with moderate to good yields. The potassium alkyltrifluoroborates 1, 2, and 3a-e were easily synthesized and obtained as air-stable crystalline solids that can be stored for long periods of time. All of the cross-couplings proceed under the same reaction conditions using PdCl(2)(dppf)