Preparations and Sulfurization Reactions of (2,4-Di-t-butyl-6-methoxyphenyl)phosphine and 1-(2,4-Di-t-butyl-6-methoxyphenyl)-2-(2,4,6-tri-t-butylphenyl)diphosphene
Preparations and Sulfurization Reactions of (2,4-Di-t-butyl-6-methoxyphenyl)phosphine and 1-(2,4-Di-t-butyl-6-methoxyphenyl)-2-(2,4,6-tri-t-butylphenyl)diphosphene
Palladium-Catalyzed Cross-Coupling of Aryl Halides Using Organotitanium Nucleophiles
作者:Hang Wai Lee、Fuk Loi Lam、Chau Ming So、Chak Po Lau、Albert S. C. Chan、Fuk Yee Kwong
DOI:10.1002/anie.200904033
日期:2009.9.21
couple: Catalysts generated from Pd(OAc)2 and indolylphosphine ligands are highly effective in the titanium‐mediated coupling of arylhalides. Catalyst loadings as low as 0.05 mol % Pd can be used. The mild reaction conditions also allow the coupling of aryl sulfonyl chlorides with aryl titanium reagents to generate diaryl sulfones.
An active ferrocenyl triarylphosphine for palladium-catalyzed Suzuki–Miyaura cross-coupling of aryl halides
作者:Fuk Yee Kwong、Kin Shing Chan、Chi Hung Yeung、Albert S. C. Chan
DOI:10.1039/b407661c
日期:——
Pd-catalyzed SuzukiâMiyaura reaction of aryl chlorides was accomplished through the use of an active ferrocene-based triarylphosphine ligand. This air- and moisture-stable ligand was found to be effective for the cross-coupling of aryl halides at room temperature to 115 °C.
An Improved System for the Aqueous Lipshutz-Negishi Cross-Coupling of Alkyl Halides with Aryl Electrophiles
作者:Vasudev R. Bhonde、Brian T. O'Neill、Stephen L. Buchwald
DOI:10.1002/anie.201509341
日期:2016.1.26
development of a palladacyclic precatalyst supported by a new biaryl(dialkyl)phosphine ligand (VPhos) in combination with octanoic acid/sodium octanoate as a simple and effective surfactant system provided an improved catalyst system for the rapid construction of a broad spectrum of alkylated scaffolds from alkyl zinc reagents generated in situ.
[EN] AMINOALKYLPHENOLS, METHODS OF USING AND MAKING THE SAME<br/>[FR] AMINOALKYLPHENOLS ET LEURS PROCEDES D'UTILISATION ET DE FABRICATION
申请人:MERCK & CO INC
公开号:WO2004000783A1
公开(公告)日:2003-12-31
The present invention relates to Mannich base antimalarial aminoalkylphenol compounds and their use against protozoa of the genus Plasmodium, particularly emerging strains of drug-resistant Plasmodia. This invention further relates to compositions containing such compounds and a process for making the compounds. This and other aspects of the invention are realized upon review of the entire specification.
Preparation and Properties of Fluorenylidene(phenyl)phosphines Bearing Bulky Groups with Electron-Donating Substituents in the Ortho Position on the Phenyl Group
Fluorenylidene(phenyl)phosphines having bulky substituents with an electron-donating group in the o-position on the phenyl group were prepared and their properties were compared. The prepared materials included 2,4-di-t-butyl-6-methoxyphenyl, 2,4-di-t-butyl-6-(phenoxymethyl)phenyl, 2,4-di-t-butyl-6-(dimethylamino)phenyl, or 2,4-di-t-butyl-6-(2-phenylethyl)phenyl. The diphosphenes and dithioxophosphoranes