Qing‐Xiang Guo

Sichuan Agricultural University

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Yao Fu

CAS Key Laboratory of Urban Pollutant Conversion

109

Lei Liu

University of Science and Technology of China

Manzhou Zhu

Anhui University

Song Xue

Tianjin University of Technology

You‐Cheng Liu

Hong Kong Science and Technology Parks Corporation

Xiangming Meng

China Pharmaceutical University

Lei Liu

University of Science and Technology of China

Yu Xu

China Pharmaceutical University

Jing Shi

University of Science and Technology of China

Xiaosong Li

University of Washington

Cooperative Institutions

University of Science and Technology of China

201

Chinese Academy of Sciences

120

Hefei University

University of Chinese Academy of Sciences

Anhui University

Tsinghua University

Hefei National Center for Physical Sciences at Nanoscale

Sichuan University

Lanzhou University

Shanghai Jiao Tong University

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ChemInform Abstract: Palladium Catalyzed Synthesis of Aryl Thiols: Sodium Thiosulfate as a Cheap and Nontoxic Mercapto Surrogate.

ChemInform (2011)

Jun Yi Yao Fu Bin Xiao Wei‐Chen Cui Qing‐Xiang Guo

Abstract Pd‐catalyzed coupling of aryl halides and triflates with sodium thiosulfate and subsequent reduction gives the corresponding aryl thiols in good yield.

Sodium thiosulfate

10.1002/chin.201115093

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Highly sensitive and selective fluorescent chemosensors for Hg(II) in an aqueous environment based on carbamodithioate

Tetrahedron Letters (2006)

Xiangming Meng Lei Liu Huiyuan Hu Manzhou Zhu Maoxiang Wang

10.1016/j.tetlet.2006.08.127

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Citations (42)

Mechanism of arylboronic acid-catalyzed amidation reaction between carboxylic acids and amines

Organic & Biomolecular Chemistry (2013)

Chen Wang Haizhu Yu Yao Fu Qing‐Xiang Guo

Arylboronic acids were found to be efficient catalysts for the amidation reactions between carboxylic acids and amines. Theoretical calculations have been carried out to investigate the mechanism of this catalytic process. It is found that the formation of the acyloxyboronic acid intermediates from the carboxylic acid and the arylboronic acid is kinetically facile but thermodynamically unfavorable. Removal of water (as experimentally accomplished by using molecular sieves) is therefore essential for overall transformation. Subsequently C–N bond formation between the acyloxyboronic acid intermediates and the amine occurs readily to generate the desired amide product. The cleavage of the C–O bond of the tetracoordinate acyl boronate intermediates is the rate-determining step in this process. Our analysis indicates that the mono(acyloxy)boronic acid is the key intermediate. The high catalytic activity of ortho-iodophenylboronic acid is attributed to the steric effect as well as the orbital interaction between the iodine atom and the boron atom.

Amide

Boronic acid

Peptide bond

Bond cleavage

10.1039/c3ob27367a

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Citations (49)

Supported copper catalysts for highly efficient hydrogenation of biomass-derived levulinic acid and γ-valerolactone

Green Chemistry (2015)

Qing Xu Xinglong Li Tao Pan Chu‐Guo Yu Jin Deng

Direct conversion of cellulose-derived levulinic acid into γ-valerolactone and γ-valerolactone into 1,4-pentanediol was carried out by chemoselective hydrogenation catalyzed through supported copper-catalysts.

Levulinic acid

Catalytic hydrogenation

10.1039/c5gc01454a

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Citations (130)

A novel Zn2+ complex as the ratiometric two-photon fluorescent probe for biological Cd2+ detection

Dyes and Pigments (2013)

Weipeng Ye Shuxing Wang Xiangming Meng Yan Feng Hongting Sheng

Two-photon excitation microscopy

10.1016/j.dyepig.2013.09.013

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Citations (24)

One-electron Oxidation of N-Benzylphenothiazine by Nitric Acid in the Presence of β-Cyclodextrin

Chemistry Letters (1998)

Haiming Zhang Xiu-Qin Ruan Qing‐Xiang Guo You‐Cheng Liu

Abstract Oxidation of N-benzylphenothiazine with nitric acid in aqueous solution was investigated in the presence of β-cyclodextrin by means of UV-vis and ESR spectroscopy. The N-benzylphenothiazine radical cation generated in β-cyclodextrin cavity is much more stable than that outside of β-cyclodextrin cavity and that in organic solvent.

Nitric acid

10.1246/cl.1998.449

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Citations (7)

Molecular interactions of α-cyclodextrin inclusion complexes using a genetic algorithm

Journal of Molecular Structure THEOCHEM (2001)

Wensheng Cai Bao-Yun Xia Xueguang Shao Qing‐Xiang Guo Bernard Maigret

10.1016/s0166-1280(00)00585-6

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Citations (18)

A theoretical study on the inclusion complexation of cyclodextrins with radical cations and anions

Journal of Physical Organic Chemistry (2001)

Ting‐Wei Mu Lei Liu Xiaosong Li Qing‐Xiang Guo

Abstract PM3 and B3LYP/3‐21G(d) calculations were performed on the inclusion complexation of cyclodextrins (CD) with radical ions. The calculations reproduced the experimental observations that the complexation of α‐CD with 1,4‐dicyanobenzene was weaker than with its radical anion, and that the complexation of β‐CD with phenothiazine was weaker than with its radical cation. On the other hand, calculations showed that the complexation of α‐CD with p ‐nitrophenolate was stronger than with its radical anion and the complexation of β‐CD with viologen was stronger than with its radical cation. The different magnitudes of the interactions between the charged species and CD or water were proposed to cause such behaviors. Copyright © 2001 John Wiley & Sons, Ltd.

Radical ion

Viologen

10.1002/poc.406

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Citations (19)

SnCl₂‐Mediated Carbonyl Allylation in Fully Aqueous Media.

ChemInform (2004)

Xiang‐Hui Tan Yongquan Hou Chao Huang Lei Liu Qing‐Xiang Guo

Abstract For Abstract see ChemInform Abstract in Full Text.

Aqueous medium

10.1002/chin.200443057

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Pd(quinoline-8-carboxylate)₂ as a Low-Priced, Phosphine-Free Catalyst for Heck and Suzuki Reactions

The Journal of Organic Chemistry (2007)

Xin Cui Juan Li Zhiping Zhang Yao Fu Lei Liu

N,O-Bidentate compounds were systematically evaluated as phosphine-free ligands for Pd-catalyzed C−C bond-formation reactions through kinetic measurements. Pd(quinoline-8-carboxylate)2 was identified as one of the most efficient, yet still low-priced, phosphine-free catalysts for Heck as well as Suzuki reactions of unactivated aryl bromides with high turnover numbers up to ca. 10,000.

Quinoline

Heck Reaction

Carboxylate

10.1021/jo701783k

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Citations (86)