Highly Efficient Monophosphine-Based Catalyst for the Palladium-Catalyzed Suzuki−Miyaura Reaction of Heteroaryl Halides and Heteroaryl Boronic Acids and Esters
作者:Kelvin Billingsley、Stephen L. Buchwald
DOI:10.1021/ja068577p
日期:2007.3.1
active and efficient catalyst system derived from a palladium precatalyst and monophosphine ligands 1 or 2 for the Suzuki-Miyaura cross-coupling reaction of heteroaryl boronic acids and esters has been developed. This method allows for the preparation of a wide variety of heterobiaryls in good to excellent yields and displays a high level of activity for the coupling of heteroaryl chlorides as well as
[EN] TRI-(ADAMANTYL)PHOSPHINES AND APPLICATIONS THEREOF<br/>[FR] TRI-(ADAMANTYL)PHOSPHINES ET LEURS APPLICATIONS
申请人:UNIV PRINCETON
公开号:WO2017075581A1
公开(公告)日:2017-05-04
In one aspect, phosphine compounds comprising three adamantyl moieties (PAd3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.
Room Temperature Cross-Coupling of Highly Functionalized Organozinc Reagents with Thiomethylated <i>N</i>-Heterocycles by Nickel Catalysis
作者:Laurin Melzig、Albrecht Metzger、Paul Knochel
DOI:10.1021/jo1001615
日期:2010.3.19
as pyridines, isoquinolines, pyrimidines, pyrazines, pyridazines, quinazolines, triazines, benzothiazoles, or benzoxazoles undergo smooth Ni-catalyzed cross-coupling reactions with functionalized aryl-, heteroaryl-, alkyl-, and benzylic zinc reagents using an inexpensive Ni(acac)2/DPE-Phos catalytic system at 25 °C.
Tri-(adamantyl)phosphines and applications thereof
申请人:The Trustees of Princeton University
公开号:US10981157B2
公开(公告)日:2021-04-20
In one aspect, phosphine compounds comprising three adamantyl moieties (PAd3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.
Efficient Suzuki−Miyaura Coupling of (Hetero)aryl Chlorides with Thiophene- and Furanboronic Acids in Aqueous <i>n-</i>Butanol
作者:Christoph A. Fleckenstein、Herbert Plenio
DOI:10.1021/jo8001886
日期:2008.4.1
An efficient Suzuki cross-coupling protocol enables the reaction of N-hetero and normal aryl chlorides with thiophene- and furanboronic acids. Coupling is effected in aqueous n-butanol as the solvent in near quantitative yield with a catalyst loading of 0.1 - 1 mol %. For heterocyclic substrates aqueous catalysis is found to be more efficient than Suzuki coupling under anhydrous conditions. The developed Suzuki coupling procedure utilizes biodegradable solvents and is useful for large scale reactions, as it includes the facile product separation from a biphasic solvent mixture without the need for additional organic solvents during workup.