Nickel catalyzed addition of -NH- containing compounds to vinyl and aryl halides
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP1178040A1
公开(公告)日:2002-02-06
A process for producing unsaturated nitrogen containing compounds such as enamides, enamines and aryl amines/amides is disclosed. A vinyl halide or aryl halide is reacted with an -NH- containing compound in the presence of a catalytic amount of a catalyst precursor composition comprising zero-valent nickel and an organophosphine ligand. One step coupling of vinyl halides and aryl halides with -NH- containing compounds is made possible by practice of this invention.
Facile Synthesis and Isolation of Secondary Amines <i>via</i>
a Sequential Titanium(IV)-Catalyzed Hydroamination and Palladium-Catalyzed Hydrogenation
作者:Erica K. J. Lui、Laurel L. Schafer
DOI:10.1002/adsc.201500861
日期:2016.3.3
alkyl‐substituted secondary amines has been developed. Using a bis(amidate)bis(amido)titanium(IV) precatalyst, the hydroamination of terminal alkynes with a range of amines results in the selective formation of the anti‐Markovnikov product. The crude enamine/imine mixtures are effectively hydrogenated using palladium on carbon (Pd/C) and H2 to afford the corresponding secondary amine in excellent yields.
Synthesis of a Novel Near-Infrared Fluorescent Dye: Applications for Fluorescence Imaging in Living Cells and Animals
作者:Tongbin Chen、Yijun Lai、Suisheng Huang
DOI:10.5012/bkcs.2013.34.10.2937
日期:2013.10.20
Fluorescence imaging is considered as one of the most powerful techniques for monitoring biomolecule activities in living systems. Near-infrared (NIR) light is advantageous for minimum photodamage, deep tissue penetration, and minimum background autofluorescence interference. Herein, we have developed a new NIR fluorescent dye, namely, RB-1, based on the Rhodamine B scaffold. RB-1 exhibits excellent
Hydroamination of phenylacetylene in the presence of gold-containing catalytic systems supported on carriers modified by ionic liquids
作者:V. I. Isaeva、N. I. Prokudina、L. М. Kozlova、L. M. Kustov、L. М. Glukhov、А. L. Tarasov、I. P. Beletskaya
DOI:10.1007/s11172-015-1231-9
日期:2015.12
nanoparticles stabilized in ionicliquids and loaded on the supports of various nature have been prepared for the first time. The gold-containing systems obtained demonstrate activity in Markovnikov regioselective hydroamination of phenylacetylene with aniline. Catalytic properties of the gold systems synthesized depend both on the carrier structure and on the nature of the ionicliquid applied (polarity, presence
Template Synthesis of NPN′ Pincer-type Ligands at Titanium Using an Ambiphilic Phosphide Scaffold
作者:Alex Moerman、E. Daiann Sosa Carrizo、Benjamin Théron、Hélène Cattey、Pierre Le Gendre、Paul Fleurat-Lessard、Adrien T. Normand
DOI:10.1021/acs.inorgchem.2c00917
日期:2022.5.16
Complex 2a (R = phenyl) undergoes chloride abstraction with [Et3SiHSiEt3][B(C6F5)4], yielding [Ti(NPN′)(NPhPPh2)][B(C6F5)4] (3). Complex 3 is a moderately active and stereoselective initiator for the ring-opening polymerization of rac-lactide. Complex 3 activates the C═O bond of 4-iodobenzaldehyde to give complex 4 as a single diastereomer despite the presence of three chiral centers. Complex 3 undergoes