(Hetero)aryl halides
Novel pyridine-based Pd(II)-complex for efficient Suzuki coupling of aryl halides under microwaves irradiation in water
... ligands, capable of forming flexible coordination modes which lead to various molecular arrangements [22, 23]. Transition metal complexes of formamidinates display novel electronic properties and recently show an ...
9
Synthesis, Characterization of Cellulose Grafted N Oxide Reagent and Its Application in Oxidation of Alkyl/Aryl Halides
... Frechet and co-workers [30] used five fold excess of the polymeric N-oxide (I) for the oxidation of 1-bromoheptane and benzyl chloride to yield 87% and 95% of corresponding aldehydes at 70˚C. In the present work, N-oxide ...
9
Palladium-catalyzed coupling of aryl halides, non-conjugated dienes and carbon nucleophiles
... Palladium-catalyzed coupling of aryl halides, non-conjugated dienes and carbon nucleophiles Abstract The present invention provides a method for the alpha,omega-arylation/alkylation of a[r] ...
10
Reactive intermediates in the reactions of aryl halides with bases
... REACTIVE INTERMEDIATES IN THE REACTIONS OF ARYL HALIDES WITH STRONG BASES Julia Kathleen Aylmer Hall A Thesis Submitted for the Degree of PhD at the University of St Andrews.. 1969 Full [r] ...
161
“KF/Al2O3 Mediated Synthesis of N-arylamines and their Antifungal Activity” by Madhu R. Sharma, M. M. V. Ramana, India.
... compound 1 and 2. After that we carried out the reaction of different primary/secondary amines (0.005M) with different hetero aryl halides (0.005M) compound 3, 4 and 5 under same conditions(Schemes 3, 4 and ...
9
C-C bond-forming reactions of ground-state aryl halides under reductive activation
... When the reaction is performed in DMSO, the major product is either 30 or 42, depending on the temperature of the reaction. It is proposed that in DMSO the substrate 26a will be present to some extent in its enolate ...
13
Synthesis of N arylamines in dry media and their antibacterial activity
... ortho/para or both to the aryl halides. Good yields (60-90%) of the N-arylated compounds were produced. The results are summarized in Tables 1 and 2. After that we carried out the reaction of different ...
12
Immobilized Palladium-pyridine Complex on γ-Fe2O3 Magnetic Nanoparticles as a New Magnetically Recyclable Heterogeneous Catalyst for Heck, Suzuki and Copper-free Sonogashira Reactions
... various aryl halides (iodides, bromides and chlorides) were coupled with olefins, phenylboronic acid and phenyl acetylene to generate the desired products in good to high ...
15
Sulfunic Acid Modifired MCM-41 Mesoporous Silica as an Efficient Nano-Catalyst for Synthesis of amides and lactams from Oximes Via Beckman Rearrangement
... Numerous methods to synthesize amids and lactames have been documented in the literature, such as the Sandmeyer reaction [2], metal-catalyzed cyanation of aryl halides, oxidation of amines, [3] and ...
6
Palladium-Catalyzed Borylation And Cross-Coupling Of Aryl And Heteroaryl Halides Utilizing Dibora Derivatives
... Overall, the one-pot Miyaura borylation/Suzuki cross-coupling is a very efficient method. The fact that boronic acids no longer have to be purchased or isolated, coupled with the ease of synthetic strategy with just ...
378
ORGANIC SYNTHESIS INVOLVING TRANSITION METALS CATALYZED CROSS COUPLING REACTIONS
... with aryl halides under ligand-free conditions and Section-B describes the copper oxide catalyzed synthesis of symmetrical diaryl selenides via cascade reactions of aryl halides with ...with ...
12
Ren, Hongjun (2006): Preparation of Condensed N-Heterocycles via Chemoselective Benzylic C-H Activations and Preparation of Alkenylmagnesium Reagents, Allylic Zinc Reagents and their Applications in Organic Synthesis. Dissertation, LMU München: Fakultät für Chemie und Pharmazie
... Transition metal-catalyzed cross-coupling reactions are well recognized to be one of the most powerful methods for carbon-carbon bond formation. The palladium-catalyzed coupling of aryl halides or their ...
226
Synthesis, Characterization and Evaluation of Novel Catalysts for Selective Organic Transformations
... The thesis deals with the design and development of heterogenized homogeneous catalysts for various organic transformations. The first chapter details the major problems encountered in conventional homogeneous processes ...
6
Synthesis of Symmetrical Triaryl Amines by Nano-CuO Catalyzed Buchwald-Hartwig Cross-coupling Reaction: NH2-Thiadiazole as a New N-source
... was examined in the presence of aryl halides (1 mmol) using 0.5 mmol of 5-methyl-1,3,4-thiadiazole-2-amine (I) and 10 mol% CuO nanopowder at 110 °C under normal atmospheric conditions and KOH as base. ...
9
SPION-A-Pd(EDTA) (superparamagnetic iron oxide nanoparticles-A-ethylendiamine tetraacetic acid) as a robust nanocatalyst for Buchwald-Hartwig C-N Coupling Reaction
... on aryl halides enhanced the N-arylated product ...of aryl halides with heterocyclic amines such as morpholine, piperidine (Table 5, entries 5-10) resulted in a desired product in an excellent ...
7
Design of Palladium(II) Chloride-supported-N-(dipyridine-2-ylmethyl)-3-(silica- magnetite)propan-1-amine and its Application on the Cross-coupling
... of aryl halides with alkenes in the presence of base, called Heck reaction [5-7], or aryl halides with organoboron, called Suzuki reaction ...
15
Thiopseudourea Ligated Palladium(II) Complexes: Synthesis, Characterization and Application as Catalysts for C-C Coupling and Heteroannulation Reactions
... Abstract Furthermore, in compare to phosphine ligands, the N-donor ligands are stable, easily synthesizable and less toxic. Consequently, it is highly desirable to develop phosphine-free Pd-catalysts for palladium ...
11
Pushing the limits of neutral organic electron donors : A tetra(iminophosphorano)-substituted bispyridinylidene
... four iminophosphorano groups onto the bispyridinylidene skeleton, as in donor 1, which provides potentials reaching 1.70 V vs. SCE (see Scheme 1). The utility of 1 as a ground- state electron donor is demonstrated in the ...
5
Palladium-catalyzed borylation of aryl (pseudo)halides and its applications in biaryl synthesis
... of aryl halides in the boryla- tion reaction, we found that the reaction was broadly amenable to a range of aryl (pseudo)halides with dif- ferent electronic parameters and bearing a variety of ...
8
Study of Bis-Imidazol-2-Ylidines as Ligands for Transition Metal Catalyzed Coupling Reactions
... available aryl halides and triflates directly into a plethora of products including amines, ethers, phenols, thiols, nitriles, amides as well as dehalogenated ...between aryl halides and ...
117