A Highly Efficient Monophosphine Ligand for Parts per Million Levels Pd-Catalyzed Suzuki-Miyaura Coupling of (Hetero)Aryl Chlorides
作者:Pui Ying Choy、On Ying Yuen、Man Pan Leung、Wing Kin Chow、Fuk Yee Kwong
DOI:10.1002/ejoc.202000068
日期:2020.5.22
A new indolylphosphine WK‐phos has been synthesized for Pd‐catalyzed Suzuki–Miyauracoupling of (hetero)aryl chlorides with (alkyl)arylboronicacids. The catalyst system with this new ligand was found to be highly effective in facilitating the reaction even at catalyst loading levels in the parts per million range (e.g. 10 ppm).
Suzuki Coupling of Cyclopropylboronic Acid With Aryl Halides Catalyzed by a Palladium–Tetraphosphine Complex
作者:Mhamed Lemhadri、Henri Doucet、Maurice Santelli
DOI:10.1080/00397910500330833
日期:2006.2
Abstract The tetraphosphine all‐cis‐1,2,3,4‐tetrakis(diphenylphosphinomethyl)cyclopentane (Tedicyp) in combination with [Pd(C3H5)Cl]2 affords a very efficient catalyst for the coupling of cyclopropylboronic acid with aryl bromides and aryl chlorides. Higher reactions rates were observed with aryl bromides than with aryl chlorides; however, even in the presence of 1–0.4% of catalyst, a few aryl chlorides
Cobalt‐Catalyzed Cross‐Coupling of Functionalized Alkylzinc Reagents with (Hetero)Aryl Halides
作者:Ferdinand H. Lutter、Lucie Grokenberger、Philipp Spieß、Jeffrey M. Hammann、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1002/anie.201914490
日期:2020.3.27
A combination of 10 % CoCl2 and 20 % 2,2'-bipyridine ligands enables cross-coupling of functionalized primary and secondary alkylzinc reagents with various (hetero)arylhalides. Couplings with 1,3- and 1,4-substituted cycloalkylzinc reagents proceeded diastereoselectively leading to functionalized heterocycles with high diastereoselectivities of up to 98:2. Furthermore, alkynyl bromides react with
One-pot sequential 1,2-addition, Pd-catalysed cross-coupling of organolithium reagents with Weinreb amides
作者:M. Giannerini、C. Vila、V. Hornillos、B. L. Feringa
DOI:10.1039/c5cc08507a
日期:——
An efficient sequential 1,2-addition/cross-coupling of Weinreb amides with two organolithium reagents is reported. This synthetic approach allows access to a wide variety of functionalized ketones in a modular way and in excellent yields.
Cross-Coupling of Cyclopropyl- and Cyclobutyltrifluoroborates with Aryl and Heteroaryl Chlorides
作者:Gary A. Molander、Paul E. Gormisky
DOI:10.1021/jo801269m
日期:2008.10.3
Suitable conditions were found for the Suzuki-Miyaura cross-coupling reaction of potassium cyclopropyl- and cyclobutyltrifluoroborates with aryl chlorides. Both of these secondary alkyl trifluoroborates coupled in moderate to excellent yield with electron-rich, electron-poor, and hindered aryl chlorides to give a variety of substituted aryl cyclopropanes and cyclobutanes.