Catalytic Direct Cross-Coupling of Organolithium Compounds with Aryl Chlorides
作者:Valentín Hornillos、Massimo Giannerini、Carlos Vila、Martín Fañanás-Mastral、Ben L. Feringa
DOI:10.1021/ol402408v
日期:2013.10.4
Palladium-catalyzed direct cross-coupling of aryl chlorides with a wide range of (hetero)aryl lithium compounds is reported. The use of Pd-PEPPSI-IPent or Pd2(dba)3/XPhos as the catalyst allows for the preparation of biaryl and heterobiaryl compounds in high yields under mild conditions (room temperature to 40 °C) with short reaction times.
Benzo/Naphtho‐Anellated Dihydro‐1,2‐oxaphosphinines and Ring‐Opening to P‐Tertiary 2‐Phosphanyl‐1,1′‐biaryl‐2‐ol Derivatives – Syntheses and Structures
作者:Piotr Wawrzyniak、Markus K. Kindermann、Gabriele Thede、Carola Schulzke、Peter G. Jones、Joachim W. Heinicke
DOI:10.1002/ejic.201700770
日期:2017.8.10
osphanes 4a and 4b. NMR-Spectra indicated two data sets for 4a but only one for 4b, indicating higher diastereoselectivity in the ring opening of the 1,2-oxaphosphinine 3b with oxygen in 2-position of naphthaline and the bulkier tBuMeP-group at the phenyl ring. Reaction of 4b with o-anisyllithium (2 equiv.) and ClSiMe3 led to the biarylsilylether 5b. Further conversion with (1S)-camphanoyl chloride
Microwave-promoted Suzuki–Miyaura coupling of arylboronic acids with 1-bromo-2-naphthol, o-bromophenol, and o-chlorophenol
作者:Piotr Wawrzyniak、Joachim Heinicke
DOI:10.1016/j.tetlet.2006.10.055
日期:2006.12
In this letter we report a simple and efficient way for the direct Suzuki-Miyaura cross-coupling of unprotected 2-hydroxyaryl bromides and of 2-chlorophenol with arylboronic acids using suitable phosphine/Pd(OAC)2 catalysts systems with moist K3PO4/toluene or moist CsF/dioxane and microwave heating (20 min 105 degrees C to 3 It 100-120 degrees C) with an internal temperature control providing 2-hydroxybiaryls in yields up to 98%. (c) 2006 Elsevier Ltd. All rights reserved.
Nickel-Catalyzed Cross-Coupling of Organolithium Reagents with (Hetero)Aryl Electrophiles
作者:Dorus Heijnen、Jean-Baptiste Gualtierotti、Valentín Hornillos、Ben L. Feringa
DOI:10.1002/chem.201505106
日期:2016.3.14
Nickel‐catalyzed selective cross‐coupling of aromatic electrophiles (bromides, chlorides, fluorides and methyl ethers) with organolithium reagents is presented. The use of a commercially available nickel N‐heterocyclic carbene (NHC) complex allows the reaction with a variety of (hetero)aryllithium compounds, including those prepared via metal‐halogen exchange or direct metallation, whereas a commercially