XinHua Xu

Name: 许新华; XinHua Xu

Organization: Hunan University

Department: College of Chemistry and Chemical Engineering

Title: Professor

Chemicals
References

Cesium-catalyzed highly regioselective synthesis of (Z)-vinylic selenosulfides via thioselenation of alkynes with unsymmetrical diorganoyl dichalcogenides

Co-reporter:Lifen Peng, Rongzhen Li, Zilong Tang, Jingyang Chen, Rongnan Yi, Xinhua Xu

Tetrahedron 2017 Volume 73, Issue 22(Issue 22) pp:

Publication Date(Web):1 June 2017

DOI:10.1016/j.tet.2017.04.009

A novel one-pot approach for the synthesis of (Z)-vinylic selenosulfides is demonstrated through the thioselenation of a wide range of alkynes with unsymmetrical diorganoyl dichalcogenides (RSSePh) catalyzed by cesium hydroxide monohydrate, avoiding the use of the transition metal catalyst and the previous preparation of chalcogen alkynes. Other outstanding features include mild reaction conditions, high regio- and stereo-selectivity, excellent yields and wide functional group tolerance.A novel one-pot approach for the synthesis of (Z)-vinylic selenosulfides is demonstrated through the thioselenation of a wide range of alkynes with unsymmetrical diorganoyl dichalcogenides (RSSePh) catalyzed by cesium hydroxide monohydrate, avoiding the use of the transition metal catalyst and the previous preparation of chalcogen alkynes. Other outstanding features include mild reaction conditions, high regio- and stereo-selectivity, excellent yields and wide functional group tolerance.Download high-res image (126KB)Download full-size image

Carbonylative Suzuki cross-coupling reaction catalyzed by bimetallic Pd-Pt nanodendrites under ambient CO pressure

Co-reporter:Zheng-Jun Wang, Xue-Yan Wang, Xia Wang, Zhi-Wu Liang, Xinhua Xu

Catalysis Communications 2017 Volume 101(Volume 101) pp:

Publication Date(Web):1 November 2017

DOI:10.1016/j.catcom.2017.06.005

•Diarylketones were synthesized via direct CO insertion with Pd-Pt NDs as catalyst.•This work did not using any ligands in the synthesis.•The synthesis was performed under lower CO pressure.•The Pd-Pt NDs could be reused for at least five cycles.Pd-catalyzed reactions between aryl boronic acids and aryl halides have undergone rapid development since the pioneering work of Suzuki and co-workers in 1979. In this paper, we described a high-efficient and cost-effective bimetallic Pd-Pt nanodendrites catalyst based on a ligand-free strategy to synthesize diaryl ketones via CO direct insertion to boronic acids and aryl halides. A variety of aryl boronic acids and aryl halides were investigated, which showed great functional group tolerance and versatile aryl ketone products in high yield.This paper describes a high-efficiency bimetallic Pd-Pt NDs catalyzed ligand-free carbonylative Suzuki cross coupling reaction.Download high-res image (106KB)Download full-size image

Bimetallic Au–Pd nanochain networks: facile synthesis and promising application in biaryl synthesis

Co-reporter:Zheng-Jun Wang;Xia Wang;Jing-Jing Lv;Jiu-Ju Feng;Ai-Jun Wang;Zhiwu Liang

New Journal of Chemistry (1998-Present) 2017 vol. 41(Issue 10) pp:3894-3899

Publication Date(Web):2017/05/15

DOI:10.1039/C7NJ00998D

A simple and facile method is described for the morphology-controlled synthesis of bimetallic Au–Pd alloyed nanochain networks (NNCs) that show high catalytic performance for the Ullmann intermolecular homocoupling of aromatic or alkyl halides (X = I, Br, Cl) in aqueous media and can be reused at least five times, which can also be applied to intramolecular homocoupling.

Calix[4]arene-assisted KOH-catalyzed synthesis of O,O-dialkyl-Se-aryl phosphoroselenoates

Co-reporter:Sihai Chen, Jinyang Chen, Xinhua Xu, Yunhua He, Rongnan Yi, Renhua Qiu

Journal of Organometallic Chemistry 2016 Volume 818() pp:123-127

Publication Date(Web):1 September 2016

DOI:10.1016/j.jorganchem.2016.06.010

•Mild reaction conditions.•Operational simplicity.•High yields.•Non-toxic and easily available starting materials.•Inexpensive catalysts.A convenient and efficient method for the synthesis of O,O-dialkyl-Se-aryl phosphoroselenoates is described via a one pot reaction of diaryl diselenide and O,O-dialkylphosphonate catalyzed by KOH assisted by a co-catalyst of calix[4]arene 3. The calix[4]arene 3 can be recycled for five times with good yields of the desired products for the reaction. This protocol provide a simple and efficient method for the synthesis of O,O-dialkyl-Se-aryl phosphoroselenoates, avoiding the use of toxic reagents and expensive catalysts.

Nickel-Catalyzed Regioselective Cleavage of Csp2–S Bonds: Method for the Synthesis of Tri- and Tetrasubstituted Alkenes

Co-reporter:Jinyang Chen, Sihai Chen, Xinhua Xu, Zhi Tang, Chak-Tong Au, and Renhua Qiu

The Journal of Organic Chemistry 2016 Volume 81(Issue 8) pp:3246-3255

Publication Date(Web):March 21, 2016

DOI:10.1021/acs.joc.6b00203

We describe here an efficient route for the synthesis of (Z)-vinylic sulfides 3 via the highly regio- and stereoselective coupling of (Z)-1,2-bis(aryl(alkyl)thio)alkenes and Grignard reagents over a Ni catalyst under mild conditions. (Z)-Vinylic sulfides 3 are important intermediates in the synthesis of tri- and tetrasubstituted alkenes that are important construction blocks for drugs and natural products. The directing organosulfur groups (SR) can be converted to diaryl(alkyl) disulfides (RSSR) using H2O2 as oxidant, hence avoiding the waste of sulfur resources. The protocol provides a general method that is highly regio- and stereoselective for the synthesis of a diversity of tri- and tetrasubstituted alkenes.

Cesium-Catalyzed Regioselective Synthesis of Trisubstituted Heteroatom Alkenes: A New Strategy for the Preparation of Functional Alkenes

Co-reporter:Jinyang Chen, Zhi Tang, Renhua Qiu, Yunhua He, Xie Wang, Ningbo Li, Haibo Yi, Chak-Tong Au, Shuang-Feng Yin, and Xinhua Xu

Organic Letters 2015 Volume 17(Issue 9) pp:2162-2165

Publication Date(Web):April 17, 2015

DOI:10.1021/acs.orglett.5b00751

A highly chemo-, regio-, and stereoselective method for the synthesis of (Z)-vinylic selenosulfides and (Z)-vinylic tellurosulfides in a one-pot reaction of terminal alkynes, diaryl disulfides, and diaryl diselenides (ditellurides) catalyzed by simple base cesium hydroxide monohydrate is described. Due to the different activities of the carbon–chalcogen bonds, the target products cleave selectively and act as a kind of readily available platform molecule for the synthesis of tetrasubstituted alkenes. The mechanism of thioselenation was studied by experimental and theoretical methods.

Nickel-Catalyzed Direct C (sp3)–H Arylation of Aliphatic Amides with Thiophenes

Co-reporter:Xie Wang, Longzhi Zhu, Sihai Chen, Xinhua Xu, Chak-Tong Au, and Renhua Qiu

Organic Letters 2015 Volume 17(Issue 21) pp:5228-5231

Publication Date(Web):October 15, 2015

DOI:10.1021/acs.orglett.5b02572

Nickel-catalyzed heteroarylation of the inactive methyl C(sp3)–H bond of aliphatic amide with heteroarenes is described. The method takes advantage of chelation assistance by an 8-aminoquinolinyl moiety. The synthetic reaction has good tolerance toward functional groups, and it can be used in the construction of various kinds of alkyl-substituted heteroarenes.

Nickel-Catalyzed Direct Thiolation of C(sp3)–H Bonds in Aliphatic Amides

Co-reporter:Xie Wang, Renhua Qiu, Chunyang Yan, Vutukuri Prakash Reddy, Longzhi Zhu, Xinhua Xu, and Shuang-Feng Yin

Organic Letters 2015 Volume 17(Issue 8) pp:1970-1973

Publication Date(Web):March 30, 2015

DOI:10.1021/acs.orglett.5b00706

Nickel-catalyzed thiolation of the inactivated methyl C(sp3)–H bonds of aliphatic amides with disulfide is described. It is a novel strategy for the synthesis of thioethers with the ultimate goal of generating thioether carboxylic acids with various functional groups.

Synthesis, characterization and applications of selenocysteine-responsive nanoprobe based on dinitrobenzene sulfonyl-modified poly(carbonate) micelles

Co-reporter:Yanxia Nan, Wenjie Zhao, Xinhua Xu, Chak-Tong Au and Renhua Qiu

RSC Advances 2015 vol. 5(Issue 85) pp:69299-69306

Publication Date(Web):30 Jul 2015

DOI:10.1039/C5RA12314C

In trace amounts, selenium (Se) participates in different physiological functions of the human body. Its biological significance is manifested in its presence as selenocysteine (Sec) in genetically encoded selenoproteins that are important in redox regulation, anti-inflammation, and cancer treatment. Recently, stimuli-responsive micelles were developed as biosensors, but there are no nanomicelle probes for the selective imaging of Sec under biological conditions (pH = 7.4). Herein, we report the design and preparation of a 2,4-dinitrobenzenesulfonyl-decorated block poly(carbonate) copolymer, viz. PMPC-Dns, for Sec imaging. We found that PMPC-Dns trapped with the fluorescent drug doxorubicin (DOX) selectively responds to Sec, while getting little interference from biological thiols, amines or alcohols. We applied the PMPC-Dns probe successfully to image endogenous Sec in cervical cancer tissues as well as in HeLa cells. In the course of these studies, we observed simultaneous release of the trapped DOX. Hence, besides Sec imaging, the probe can be used for controlled delivery of hydrophobic molecules for biomedical applications.

Cu(II)@Luviset clear as recyclable catalyst for the formation of C–C bond in homo-coupling of terminal alkynes

Co-reporter:Zheng-Jun Wang, Peng-Hui Wang, Jing-Jing Lv, Jiu-Ju Feng, Xinhua Xu, Ai-Jun Wang, Chak-Tong Au and Renhua Qiu

RSC Advances 2015 vol. 5(Issue 117) pp:96372-96376

Publication Date(Web):05 Nov 2015

DOI:10.1039/C5RA17834G

Commercial copolymer Luviset clear (L1), an environmentally benign and efficient ligand, was used to facilitate the catalytic performance of Cu(NO3)2 for homo-coupling of terminal alkynes. A series of substituted aromatic and aliphatic terminal alkynes were investigated. It was found that Cu(NO3)2@L1 can catalyze the C–C coupling reactions without any other base, and the corresponding diynes are generated in good to excellent yield. X-ray photoelectron spectroscopy was used to study the reaction mechanism, and the results evidence a Cu(II)/Cu(I) catalytic system. Additionally, the catalyst can be easily separated and reused without showing significant loss of catalytic activity.

Enhanced catalytic performance of Pd–Pt nanodendrites for ligand-free Suzuki cross-coupling reactions

Co-reporter:Zheng-Jun Wang, Jing-Jing Lv, Jiu-Ju Feng, Ningbo Li, Xinhua Xu, Ai-Jun Wang and Renhua Qiu

RSC Advances 2015 vol. 5(Issue 36) pp:28467-28473

Publication Date(Web):17 Mar 2015

DOI:10.1039/C5RA02462E

Pd–Pt nanodendrites were synthesized by a facile, environment-friendly, one-pot wet-chemical method, without using any seed, template, or toxic organic solvent. The as-obtained bimetallic nanocrystals exhibited efficient catalytic activity toward ligand-free Suzuki cross-coupling reaction in ethanol aqueous solution. A series of biphenyl compounds were obtained with high yields under mild conditions. Furthermore, the catalyst could be easily recovered and reused at least 6 consecutive cycles, nearly without losing its catalytic activity.

Air-stable zirconocene bis(perfluorobutanesulfonate) as a highly efficient catalyst for synthesis of N-heterocyclic compounds

Co-reporter:Jinying Wang, Ningbo Li, Renhua Qiu, Xiaohong Zhang, Xinhua Xu, Shuang-Feng Yin

Journal of Organometallic Chemistry 2015 Volume 785() pp:61-67

Publication Date(Web):1 June 2015

DOI:10.1016/j.jorganchem.2015.02.014

•A general and mild protocol for the synthesis N-heterocyclic compounds.•Catalytic amount of [Cp2Zr(H2O)2] [OSO2C4F9]2 exhibited higher catalytic activity.•The good-to-excellent yields were obtained under solvent-free condition.•Catalyst can be reused without significant loss of activity in a test of five cycles.Zirconocene bis(perfluorobutanesulfonate) is air- and water-stable and proved to be ionic on basis of conductivity measurements. It exhibits high catalytic efficiency for the synthesis of N-heterocyclic compounds under solvent-free condition, such as benzimidazoles, benzodiazepines, dihydropyrimidinones and dihydropyridines under mild condition. Furthermore, it can be reused without loss of activity in a test of five cycles. This catalytic system affords a simple and efficient approach for the synthesis of N-heterocyclic compounds.Zirconocene bis(perfluorobutanesulfonate) is air- and water-stable and exhibits high catalytic efficiency for the synthesis of N-heterocyclic compounds. Furthermore, it can be reused without loss of activity in a test of five cycles. This catalytic system affords a simple and efficient approach for the synthesis of N-heterocyclic compounds.

Cesium hydroxide-catalyzed isomerization of terminal alkynes for the synthesis of O-allenes and N-allenes

Co-reporter:You Li, Jinyang Chen, Renhua Qiu, Xie Wang, Jinguo Long, Longzhi Zhu, Chak-Tong Au, Xinhua Xu

Tetrahedron Letters 2015 Volume 56(Issue 41) pp:5504-5507

Publication Date(Web):7 October 2015

DOI:10.1016/j.tetlet.2015.08.016

A novel and efficient method for the synthesis of O-allenes and N-allenes via isomerization of terminal alkynes catalyzed by cesium hydroxide monohydrate is described. The advantages of this method include: mild reaction conditions, high yields and wide tolerance toward functional groups. The protocol provides an efficient route to O-allenes and N-allenes, which are important intermediates in organic synthetic chemistry.

Strong Lewis acids of air-stable binuclear triphenylantimony(V) complexes and their catalytic application in C–C bond-forming reactions

Co-reporter:Ningbo Li, Renhua Qiu, Xiaohong Zhang, Yun Chen, Shuang-Feng Yin, Xinhua Xu

Tetrahedron 2015 Volume 71(Issue 25) pp:4275-4281

Publication Date(Web):24 June 2015

DOI:10.1016/j.tet.2015.05.013

Two air-stable novel Lewis acids of triphenylantimony(V) pentafluorbezenesulfonates (2) and perfluorooctanesulfonates (3) were successfully synthesized and characterized. X-ray studies and thermo-gravimetric analysis found that these complexes showed high anti-hydrolyzability and thermal stability. The high catalytic activity and excellent recyclability of these complexes were achieved in the Michael addition reaction and the allylation reaction. On account of their stability, storability, as well as catalytic efficiency, these complexes should find a broad range of utility in organic synthesis.

Synthesis and structure of an air-stable bis(isopropylcyclopentadienyl) zirconium perfluorooctanesulfonate and its catalyzed benzylation of 1,3-dicarbonyl derivatives with alcohols

Co-reporter:Xiaohong Zhang, Renhua Qiu, Congcong Zhou, Jingxing Yu, Ningbo Li, Shuangfeng Yin, Xinhua Xu

Tetrahedron 2015 Volume 71(Issue 7) pp:1011-1017

Publication Date(Web):18 February 2015

DOI:10.1016/j.tet.2014.12.101

An air-stable uninuclear complex of bis(isopropylcyclopentadienyl) zirconium perfluorooctane sulfonate (1a·H2O·3THF) was successfully synthesized by the reaction of (i-PrCp)2ZrCl2 with C17SO3Ag. The compound 1a·H2O·3THF was characterized by different techniques (such as X-ray single crystal diffraction, TG-DSC, conductivity measurement and acid strength) and found to have the similar nature of water tolerance, air-stability, thermally-stability and strong Lewis-acidity with that of our previously reported binuclear and uninuclear zirconocenes perfluorooctanesulfonate. This novel complex was confirmed to be an effective catalyst with good recyclability and reusability for the direct benzylation of 1,3-dicarbonyl derivatives using alcohols as alkylating agents. Various 1,3-dicarbonyl and alcohols derivatives can participate in the reaction, affording the corresponding monobenzylated products in competitive yields as compared to its counterparts, such as Cp2Zr(OSO17)2·3H2O·THF and the traditional Lewis-acid catalysts.

Strong Lewis acid air-stable cationic titanocene perfluoroalkyl(aryl)sulfonate complexes as highly efficient and recyclable catalysts for C–C bond forming reactions

Co-reporter:Ningbo Li, Jinying Wang, Xiaohong Zhang, Renhua Qiu, Xie Wang, Jinyang Chen, Shuang-Feng Yin and Xinhua Xu

Dalton Transactions 2014 vol. 43(Issue 30) pp:11696-11708

Publication Date(Web):27 May 2014

DOI:10.1039/C4DT00549J

A series of strong Lewis acid air-stable titanocene perfluoroalkyl(aryl)sulfonate complexes Cp2Ti(OH2)2(OSO2X)2·THF (X = C8F17, 1·THF; X = C4F9, 2·H2O·THF; X = C6F5, 3) were successfully synthesized by the treatment of Cp2TiCl2 with C8F17SO3Ag, C4F9SO3Ag and C6F5SO3Ag, respectively. In contrast to well-known titanocene bis(triflate), these complexes showed no change in open air over three months. TG-DSC analysis showed that 1·THF, 2·H2O·THF and 3 were thermally stable at 230 °C, 220 °C and 280 °C, respectively. Conductivity measurements showed that these complexes underwent ionic dissociation in CH3CN solution. X-ray analysis results confirmed that 2·H2O·THF and 3 were cationic. ESR spectra showed that the Lewis acidity of 1·THF (1.06 eV) was higher than that of Sc3+ (1.00 eV) and Y3+ (0.85 eV). UV/Vis spectra showed a significant red shift due to the strong complex formation between 10-methylacridone and 2·H2O·THF. Fluorescence spectra showed that the Lewis acidity of 2 (λem = 477 nm) was higher than that of Sc3+ (λem = 474 nm). These complexes showed high catalytic ability in various carbon–carbon bond forming reactions. Moreover, they show good reusability. Compared with 1·THF, 2·H2O·THF and 3 exhibit higher solubility and better catalytic activity, and will find broad applications in organic synthesis.

Synthesis and structure of an air-stable binuclear complex of bis(ethylcyclopentadienyl)zirconium perfluorooctanesulfonate and its catalytic application in one-pot three-component aza-Friedel–Crafts reactions

Co-reporter:Xiaohong Zhang, Xingsong Zhang, Ningbo Li, Xinhua Xu, Renhua Qiu, Shuangfeng Yin

Tetrahedron Letters 2014 Volume 55(Issue 1) pp:120-123

Publication Date(Web):1 January 2014

DOI:10.1016/j.tetlet.2013.10.131

An air-stable Lewis acidic binuclear complex of bis(ethylcyclopentadienyl)zirconium perfluorooctanesulfonate (1a) was successfully synthesized by the reaction of (CH3CH2Cp)2ZrCl2 with C8F17SO3Ag. The complex 1a was characterized by different techniques and found to have the nature of air-stability, water tolerance, thermal-stability, and strong Lewis-acidity. In addition, its solubility was higher than that of our previously reported uninuclear zirconocene bis(perfluorooctanesulfonate). This complex showed high catalytic efficiency, good recyclability, and reusability in the one-pot three-component aza-Friedel–Crafts reactions of indoles with aldehydes and N,N-dimethylaniline. The yields of the corresponding 3-diarylmethyl indoles are higher than those from the traditional Lewis acidic catalysts.

Synthesis and structure of an air-stable μ2-hydroxy-bridged binuclear complex of bis(methylcyclopentadienyl)dizirconium(IV) perfluorooctanesulfonate and its application in Lewis acid-catalyzed reactions

Co-reporter:Xiaohong Zhang, Cong Lou, Ningbo Li, Xinhua Xu, Renhua Qiu, Shuangfeng Yin

Journal of Organometallic Chemistry 2014 749() pp: 241-245

Publication Date(Web):

DOI:10.1016/j.jorganchem.2013.10.004

Synthesis and Structures of Air-Stable Binuclear Hafnocene Perfluorobutanesulfonate and Perfluorobenzenesulfonate and their Catalytic Application in CC Bond-Forming Reactions

Co-reporter:Ningbo Li;Xiaohong Zhang;Yun Chen;Renhua Qiu;Jinyang Chen;Xie Wang;Shuang-Feng Yin

Advanced Synthesis & Catalysis 2013 Volume 355( Issue 11-12) pp:2430-2440

Publication Date(Web):

DOI:10.1002/adsc.201300439

A simple and convenient method for the synthesis of S-aryl phosphorothioates catalyzed by cesium hydroxide

Co-reporter:Yue-Jun Ouyang, Yuan-Yuan Li, Ning-Bo Li, Xin-Hua Xu

Chinese Chemical Letters 2013 Volume 24(Issue 12) pp:1103-1105

Publication Date(Web):December 2013

DOI:10.1016/j.cclet.2013.06.020

In the presence of a catalytic amount of cesium hydroxide, the corresponding S-aryl phosphorothioates can be obtained by the reactions of dialkyl phosphites with diaryldisulfides in excellent yields at room temperature, using DMSO as a solvent. The reaction mechanism was discussed. The method provides a new and expedient path for the preparation of S-aryl phosphorothioates.In the presence of a catalytic amount of cesium hydroxide, the corresponding S-aryl phosphorothioates can be obtained by the reactions of dialkyl phosphites with diaryldisulfides in excellent yields at room temperature, using DMSO as a solvent. The reaction mechanism was discussed. The method provides a new and expedient path for the preparation of S-aryl phosphorothioates.

Strong Lewis Acids of Air-Stable Metallocene Bis(perfluorooctanesulfonate)s as High-Efficiency Catalysts for Carbonyl-Group Transformation Reactions

Co-reporter:Dr. Renhua Qiu;Dr. Xinhua Xu;Dr. Lifeng Peng;Dr. Yalei Zhao;Dr. Ningbo Li;Dr. Shuangfeng Yin

Chemistry - A European Journal 2012 Volume 18( Issue 20) pp:6172-6182

Publication Date(Web):

DOI:10.1002/chem.201103874

Abstract

Strong Lewis acids of air-stable metallocene bis(perfluorooctanesulfonate)s [M(Cp)₂][OSO₂C₈F₁₇]₂⋅nH₂O⋅THF (M=Zr (2 a⋅3 H₂O⋅THF), M=Ti (2 b⋅2 H₂O⋅THF)) were synthesized by the reaction of [M(Cp)₂]Cl₂ (M=Zr (1 a), M=Ti (1 b)) with nBuLi and C₈F₁₇SO₃H (2 equiv) or with C₈F₁₇SO₃Ag (2 equiv). The hydrate numbers (n) of these complexes were variable, changing from 0 to 4 depending on conditions. In contrast to well-known metallocene triflates, these complexes suffered no change in open air for a year. thermogravimetry–differential scanning calorimetry (TG-DSC) analysis showed that 2 a and 2 b were thermally stable at 300 and 180 °C, respectively. These complexes exhibited unusually high solubility in polar organic solvents. Conductivity measurement showed that the complexes (2 a and 2 b) were ionic dissociation in CH₃CN solution. X-ray analysis result confirmed 2 a⋅3 H₂O⋅THF was a cationic organometallic Lewis acid. UV/Vis spectra showed a significant red shift due to the strong complex formation between 10-methylacridone and 2 a. Fluorescence spectra showed that the Lewis acidity of 2 a fell between those of Sc³⁺ (λ_em=474 nm) and Fe³⁺ (λ_em=478 nm). ESR spectra showed the Lewis acidity of 2 a (0.91 eV) was at the same level as that of Sc³⁺ (1.00 eV) and Y³⁺ (0.85 eV), while the Lewis acidity of 2 b (1.06 eV) was larger than that of Sc³⁺ (1.00 eV) and Y³⁺ (0.85 eV). They showed high catalytic ability in carbonyl-compound transformation reactions, such as the Mannich reaction, the Mukaiyama aldol reaction, allylation of aldehydes, the Friedel–Crafts acylation of alkyl aromatic ethers, and cyclotrimerization of ketones. Moreover, the complexes possessed good reusability. On account of their excellent catalytic efficiency, stability, and reusability, the complexes will find broad catalytic applications in organic synthesis.

Facile synthesis of highly active Pd-Cu nanowires catalyst through a simple wet-chemical strategy for ligand-free Suzuki cross coupling reaction

Co-reporter:Jing-Jing Lv, Zheng-Jun Wang, Jiu-Ju Feng, Renhua Qiu, Ai-Jun Wang, Xinhua Xu

Applied Catalysis A: General (25 July 2016) Volume 522() pp:

Publication Date(Web):25 July 2016

DOI:10.1016/j.apcata.2016.02.015

•A facile and efficient one-pot wet chemical method was developed to synthesize Pd-Cu nanowires (NWs) using octylphenoxypolyethoxyethanol as structure-directing and stabilizing agents.•The Pd-Cu NWs shows prominent catalytic ability and durability for the Suzuki cross coupling reaction under mild conditions.•Pd-Cu NWs is stable and reusable for the reaction.The construction and design of nanomaterials are important for improving their performance. Here we present a simple one-pot wet-chemical method for the preparation of alloyed Pd-Cu nanowires using octylphenoxypolyethoxyethanol (NP-40) as structure-directing and stabilizing agents. The obtained nanocrystals display outstanding catalytic activity for ligand-free Suzuki cross coupling reaction under mild conditions, and can be easily recovered and reused for at least 5 consecutive cycles without showing significant loss of catalytic activity.Pd-Cu nanowires were facilely synthesized by a simple one-pot wet-chemical method. The nanocrystals show remarkable catalytic performance toward ligand-free Suzuki cross coupling reaction under mild conditions.Download high-res image (243KB)Download full-size image

Strong Lewis acid air-stable cationic titanocene perfluoroalkyl(aryl)sulfonate complexes as highly efficient and recyclable catalysts for C–C bond forming reactions

Co-reporter:Ningbo Li, Jinying Wang, Xiaohong Zhang, Renhua Qiu, Xie Wang, Jinyang Chen, Shuang-Feng Yin and Xinhua Xu

Dalton Transactions 2014 - vol. 43(Issue 30) pp:NaN11708-11708

Publication Date(Web):2014/05/27

DOI:10.1039/C4DT00549J