Home  About us  Contact
 

Arylboronic Acids (arylboronic + acid)

Distribution by Scientific Domains
Chemistry100%
Distribution within Chemistry
Organic Chemistry87%
General & Introductory Chemistry6%

Selected Abstracts

Palladium(II)-Catalyzed Addition of Arylboronic Acid to Nitriles.

CHEMINFORM, Issue 1 2007
Baowai Zhao
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

ChemInform Abstract: Copper-Catalyzed General C,N and C,O Bond Cross-Coupling with Arylboronic Acid.

CHEMINFORM, Issue 32 2001
Patrick Y. S. Lam
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

CuI/DABCO-Catalyzed Cross-Coupling Reactions of Aryl Halides with Arylboronic Acids

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 9 2006
Jin-Heng Li
Abstract CuI combined with DABCO (1,4-diaza-bicyclo[2.2.2]octane) was developed as an inexpensive and efficient catalytic system for the Suzuki,Miyaura cross-coupling of aryl halides with arylboronic acids. The couplings between aryl iodides and arylboronic acids catalyzed by catalytic amounts of CuI and DABCO proceeded smoothly in moderate to excellent yields. However, the CuI/DABCO system was less efficient in the reactions of aryl bromides, and a higher reaction temperature was required to improve the yield. For the less activated aryl bromides, a stoichiometric amount of CuI together with TBAB was necessary to obtain satisfactory yields. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source]

Rhodium Fluoroapatite Catalyzed Conjugate Addition of Arylboronic Acids to ,,, -Unsaturated Carbonyl Compounds

HELVETICA CHIMICA ACTA, Issue 10 2008
Lakshmi Kantam, Mannepalli
Abstract Rhodium fluoroapatite (RhFAP) is an efficient catalyst for conjugate addition of organoboron reagents to ,,, -unsaturated carbonyl compounds. A variety of arylboronic acids and ,,, -unsaturated carbonyl compounds were converted to the corresponding conjugate-addition products, demonstrating the versatility of the reaction. The reaction is highly selective. RhFAP was recovered quantitatively by simple filtration, and reused for four cycles. [source]

tert -Butanesulfinylphosphines: Simple Chiral Ligands in Rhodium-Catalyzed Asymmetric Addition of Arylboronic Acids to Electron-Deficient Olefins

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2010
Feng Lang
Abstract An efficient rhodium complex catalyst system was developed by using a class of simple tert -butanesulfinylphosphines as bidentate ligands, which solely bear sulfur chirality and combine the advantages of both sulfoxide and phosphine ligands. Excellent activities (in 0.5 hour, up to 99% yield) and enantioselectivities (up to 98% ee) were displayed in Rh-catalyzed asymmetric 1,4-additions under mild conditions. [source]

Rhodium- and Palladium-Catalyzed Hydroarylation of Propargylic Amines with Arylboronic Acids

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 2-3 2010
Antonio Arcadi
Abstract The hydroarylation of 3-arylprop-2-yn-1-amine derivatives with arylboronic acids has been studied in the presence of rhodium or palladium catalysts. By using a rhodium-based catalytic system, ,,,-diarylallylamines were isolated in good yields. By contrast, the formation of the regiosomeric ,,,-diarylallylamines was achieved by means of a palladium catalyst in the presence of acetic acid. The complementary regioselectivity displayed by these two processes is a consequence of different catalytic cycles, involving respectively carborhodation or hydropalladation of the coordinated alkyne as key steps. Calculated charge distributions in the ,-complexes are in accord with the results obtained. [source]

New Synthesis of Furans: the Rhodium-Catalysed Carbonylative Addition of Arylboronic Acids to Propargylic Alcohols/ Cyclisation Sequence

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 2-3 2010
Julien Dheur
Abstract The rhodium-catalysed carbonylative addition of arylboronic acids to propargylic alcohols yields gamma-hydroxy enones that are readily cyclised through a dehydration step to the corresponding furan analogues. The transformation was improved thanks to the screening of the reaction conditions and consequent improvements were obtained from the use of dicarbonylrhodium iodide [Rh(CO)2I]2 as catalyst precursor. The generalisation of the reaction was then further investigated by employing variously substituted arylboronic acids and propargylic alcohols. [source]

Regioselective Synthesis of Phenols and Halophenols from Arylboronic Acids Using Solid Poly(N -vinylpyrrolidone)/ Hydrogen Peroxide and Poly(4-vinylpyridine)/Hydrogen Peroxide Complexes

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2009
K. Surya Prakash
Abstract Solid hydrogen peroxide complexes based on poly(N -vinylpyrrolidone) and poly(4-vinylpyridine) were prepared and used as solid hydroxylating reagents. These solid hydrogen peroxide equivalents are found to be much safer, convenient and efficient reagent systems for the ipso -hydroxylation of arylboronic acids to the corresponding phenols in high yields at a faster rate. The versatility of the reagents has been further expanded for the one-pot synthesis of halophenols. Density functional theory calculations were carried out on hydrogen peroxide complexes of N -ethylpyrrolidone and 4-ethylpyridine as models to get a better understanding of structure and behavior of hydrogen peroxide complexes of the polymers poly(N -vinylpyrrolidone) and poly(4-vinylpyridine) compared to aqueous hydrogen peroxide. [source]

Highly Active, Well-Defined (Cyclopentadiene)(N-heterocyclic carbene)palladium Chloride Complexes for Room-Temperature Suzuki,Miyaura and Buchwald,Hartwig Cross-Coupling Reactions of Aryl Chlorides and Deboronation Homocoupling of Arylboronic Acids

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2009
Zhong Jin
Abstract A new class of well-defined N-heterocyclic carbene (NHC)-(cyclopentadiene)palladium chloride complexes such as CpPd(NHC)Cl wasw synthesized from the readily available starting NHC-palladium(II) chloride dimers. These air-stable, coordinatively saturated NHC-Pd complexes bearing the cyclopentadiene (Cp) unit exhibit high catalytic activity in the room temperature Suzuki,Miyaura and Buchwald,Hartwig cross-coupling reactions involving unactive aryl chlorides as the substrates. In addition, they are found to be extremely efficient catalysts in the deboronation homocoupling of arylboronic acids at room temperature. [source]

Iron-Catalyzed Ligand-Free Carbon-Selenium (or Tellurium) Coupling of Arylboronic Acids with Diselenides and Ditellurides

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2009
Min Wang
Abstract Carbon-selenium and carbon-tellurium cross-couplings of arylboronic acids with diselenides and ditellurides have been catalyzed by iron(0), iron(II) chloride or iron(III) chloride without any ligand and additive in the air. The method yields the corresponding unsymmetrical diorgano monoselenides and monotellurides in good to excellent yields, displays a broad substrate scope, and is simple, convenient, effective, economical and environmentally friendly. [source]

Copper-Catalyzed Stereoselective Hydroarylation of 3-Aryl-2- propynenitriles with Arylboronic Acids

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 9 2009
Yoshihiko Yamamoto
Abstract The selective synthesis of 3,3-diarylacrylonitriles has been achieved by copper-catalyzed hydroarylation of 3-aryl-2-propynenitriles with arylboronic acids. The starting cyanoalkynes were efficiently prepared from the appropriate aromatic aldehydes and diethyl cyanomethylphosphonate in two steps. The hydroarylation of the obtained cyanoalkyne substrates proceeded in methanol at ambient temperature to produce 3,3-diarylacrylonitriles in good to high yields with excellent syn selectivity. The present method was successfully applied to the regiospecific synthesis of both stereoisomers of CC-5079, which was recently reported as a potent anticancer drug. [source]

A Mild, One-Pot Synthesis of Arylamines via Palladium- Catalyzed Addition of Aryl Aldehydes with Amines and Arylboronic Acids in Water

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2009
Ajuan Yu
Abstract A mild, one-pot synthesis of diarylmethylamines via the palladium-catalyzed addition of aryl aldehydes with amines and arylboronic acids is reported. Best results were obtained in neat water with ammonium chloride as additive, affording diarylmethylamine derivatives as the main products. [source]

An N -Linked Bidentate Phosphoramidite Ligand (N- Me-BIPAM) for Rhodium-Catalyzed Asymmetric Addition of Arylboronic Acids to N- Sulfonylarylaldimines

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2009
Kazunori Kurihara
Abstract A chiral N -linked C2 -symmetric bidentate phosphoramidite (N- Me-BIPAM) was newly developed for the rhodium-catalyzed enantioselective addition of arylboronic acids to N- sulfonylimines. This ligand achieved high enantioselectivities in a range of 84,99% ee in additions of arylboronic acids to N- tosyl- and N- nosylarylaldimines. [source]

Synthesis of Rhodium Colloidal Nano-Coating Grafted Mesoporous Silica Composite and its Application as Efficient Environmentally Benign Catalyst for Heck-Type Reaction of Arylboronic Acids

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2008
Liang Li
Abstract The synthesis and characterization of rhodium colloidal layer grafted mesoporous SBA-15 material, designated as SBA-Rh, are presented. In the preparation of this new catalyst, SBA-15 mesoporous material was used as support without any pretreatment. The SiH functional groups were introduced onto the surface which resulted in highly dispersed metal colloid layer both on the outer and inner surface of the supporting material. The material was investigated for Heck-type coupling reactions of alkenes with ayboronic in organic/water solvent. The ultrahigh specific area, large pore opening, and highly dispersed catalyst species in SBA-Rh material created one of the most active heterogeneous catalysts for such reactions. Rhodium element was not detected in the final mixture by ICP after reaction. The catalyst species showed very high stability against leaching from the matrix and can be recycled for repeated use. [source]

Palladium/Phosphite or Phosphate Catalyzed Oxidative Coupling of Arylboronic Acids with Alkynes to Produce 1,4-Diaryl-1,3-butadienes

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 3 2008
Hakaru Horiguchi
Abstract The intermolecular oxidative coupling of arylboronic acids with internal alkynes efficiently proceeds in a 2:2 manner in the presence of palladium acetate, a triaryl phosphite or phosphate, and silver carbonate as catalyst, ligand, and oxidant, respectively, to produce the corresponding 1,4-diaryl-1,3-butadiene derivatives. [source]

ChemInform Abstract: Synthesis of 4-Aryl-1H-pyrazoles by Suzuki,Miyaura Cross Coupling Reaction Between 4-Bromo-1H-1-tritylpyrazole and Arylboronic Acids.

CHEMINFORM, Issue 43 2010
Hayato Ichikawa
Abstract A general method is presented for the preparation of title compounds (III). [source]

ChemInform Abstract: Metal-Catalyzed Reactions Between 2-Azabicyclo[2.2.1]hept-5-en-3-ones and Arylboronic Acids.

CHEMINFORM, Issue 42 2010
Takumi Abe
Abstract Under microwave irradiation conditions, catalytic amounts of Cu(II) are sufficient to catalyze the N-arylation of bicycle (I) and analogues, whereas in the presence of a rhodium catalyst C-arylation occurs. [source]

ChemInform Abstract: Highly Efficient Synthesis of Phenols by Copper-Catalyzed Oxidative Hydroxylation of Arylboronic Acids at Room Temperature in Water.

CHEMINFORM, Issue 36 2010
Jimin Xu
Abstract The method is compatible with various functionalities and affords the desired phenols in good to excellent yields. [source]

ChemInform Abstract: NiII,(,-Aryl) Complex Catalyzed Suzuki Reaction of Aryl Tosylates with Arylboronic Acids.

CHEMINFORM, Issue 36 2010
Xin-Heng Fan
No abstract is available for this article. [source]

ChemInform Abstract: Cross Coupling in Water: Suzuki,Miyaura Vinylation and Difluorovinylation of Arylboronic Acids.

CHEMINFORM, Issue 33 2010
Jan Pschierer
Abstract A general and efficient protocol for the Suzuki,Miyaura vinylation of arylboronic acids in aqueous media is developed utilizing a catalyst system consisting of Na2PdCl4 and the commercially available, water-soluble fluorenylphosphine ligand cataCXium F sulf. [source]

ChemInform Abstract: Generally Applicable and Efficient Oxidative Heck Reaction of Arylboronic Acids with Olefins Catalyzed by Cyclopalladated Ferrocenylimine under Base- and Ligand-Free Conditions.

CHEMINFORM, Issue 24 2010
Yuting Leng
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: The Rhodium-Catalyzed 1,2-Addition of Arylboronic Acids to Aldehydes and Ketones with Sulfonated S-Phos.

CHEMINFORM, Issue 14 2010
James R. White
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Rhodium-Catalyzed Ring-Opening Reactions of a 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene with Arylboronic Acids.

CHEMINFORM, Issue 6 2010
Ben P. Machin
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Pd/TEMPO-Catalyzed Electrooxidative Synthesis of Biaryls (II) from Arylboronic Acids or Arylboronic Esters.

CHEMINFORM, Issue 4 2010
Koichi Mitsudo
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Efficient Rhodium-Catalyzed Conjugate Addition of Arylboronic Acids to Unsaturated Furano Esters for the Highly Stereoselective Synthesis of Four Natural Trisubstituted Furanolignans.

CHEMINFORM, Issue 3 2010
Aurelie Mondiere
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Hydrogen Peroxide Mediated Formation of Heteroaryl Ethers from Pyridotriazol-1-yloxy Heterocycles and Arylboronic Acids.

CHEMINFORM, Issue 3 2010
Sujata Bardhan
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Stereoselective Synthesis of syn-Configured ,-Allenols by Rhodium-Catalyzed Reaction of Alkynyl Oxiranes with Arylboronic Acids.

CHEMINFORM, Issue 1 2010
Tomoya Miura
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Regioselective Synthesis of Phenols and Halophenols from Arylboronic Acids Using Solid Poly(N-vinylpyrrolidone)/Hydrogen Peroxide and Poly(4-vinylpyridine)/Hydrogen Peroxide Complexes.

CHEMINFORM, Issue 49 2009
G. K. Surya Prakash
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Ligand-Free Copper(I)-Catalyzed Sonogashira-Type Coupling of Arylboronic Acids with Terminal Alkynes.

CHEMINFORM, Issue 48 2009
Changduo Pan
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: A Simple Access to Symmetric Diarylamines via Copper(II)-Catalyzed Coupling of Aqueous Ammonia with Arylboronic Acids.

CHEMINFORM, Issue 47 2009
Changfeng Zhou
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]