CATALYSIS COMMUNICATIONS
·
2008
·
IF 2.394
Yunlai Ren,Zhifei Liu,Shuang Zhao,Xinzhe Tian,Jianji Wang,Weiping Yin,Shebin He
Commercially available and inexpensive ethylenediamine/Cu(OAc) 2 · H 2 O has been found to be a highly effective catalyst system for the cyanation of aryl bromides in the solvent of NMP. At the same time, the highly activated aryl chlorides with NO 2 groups gave corresponding benzonitriles in good yields. Similar to the previous observation, it is not necessary to use an excess of K 4 [Fe(CN) 6 ] in the cyanation reaction (only 20 mol% of K 4 [Fe(CN) 6 ] was used). In other hand, a more remarkable KI-accelerated effect was observed for the cyanation reaction: the addition of KI increased the yield from 6% to 91% in the cyanation of bromobenzene.
研究领域:
有机化学
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催化化学
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DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2017
·
IF 2.813
Ling Zhang,Xue Liu,Rui-Xia Yang,Nian-Yu Huang,Wei-Qiao Deng
Covalent triazine-based frameworks (CTFs) are important microporous materials with a wide range of applications. Here, we demonstrate an environmentally benign and economic synthetic pathway to CTFs. The monomers used for CTFs, aromatic nitriles , were obtained by cyanation using nontoxic potassium hexacyanoferrate(II) in place of commonly used toxic cyanides. Then, the CTFs were synthesized by trimerization of the corresponding cyano monomers in molten zinc chloride . A series of CTFs was synthesized, and the highest Brunauer-Emmett-Teller surface area measured in this series was 2404 m 2 /g. Among the synthesized CTFs, CTF DCP exhibited excellent CO 2 adsorption properties, with a CO 2 uptake of 225 mg/g at 0 °C.
研究领域:
材料科学
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环境科学
·
化学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wenjie Shao,Junpeng Wang,Meiying Niu,Jun Tang,Qiuhong Pan,Ziguo He,Ping Cui,LiFeng Chen,Zhiyong Fang,Qingping Ke
The oxidative cyanation of fructose to nitriles using ammonia and oxygen over heterogeneous catalysts is still challenging due to the insufficient activation of reactants on coordination-saturated metal oxides. In this study, we have developed an acidic manganese oxide (A-MnO x ) catalyst through an anion doping strategy to enhance the aerobic ammoxidation of 5-hydroxymethylfurfural (HMF) to hydroxymethylfurfural carbonitrile (HMFC). Compared to the commercial MnO 2 , the anion doping strategy induced more coordination-unsaturated Mn and O sites on the A-MnO x catalyst. These coordination-unsaturated Mn and O sites create abundant strong Lewis acid sites, which facilitate the activation of oxygen and HMF. Consequently, the A-MnO x catalyst demonstrated remarkable performance, achieving an 88.3% yield of HMFC with an exceptional selectivity of 96.1%. This performance surpasses that of most previously reported catalysts, underscoring the efficiency of our approach. This study was further extended to such catalytic system to the synthesis of HMFC from fructose with superior catalytic performance.
研究领域:
化学工程
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催化科学
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产品关联
DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2019
·
IF 4.745
Jiashen Qiu,Di Wu,Lexia Yuan,Pingliang Long,Hongquan Yin,Fu-Xue Chen
An enantioselective thiocyanation of oxindoles has been developed for the first time using a bifunctional cinchona-derived organo-catalyst and N-thiocyanatophthalimide as the electrophilic thiocyanation source in the presence of 2-naphthol as the additive. Various enantioenriched 3,3′-disubstituted oxindoles with SCN-containing quaternary carbon stereocenters were synthesized under mild conditions in high yields (up to 99%) and good enantioselectivities (up to 6:94 er).
研究领域:
有机化学
·
合成化学
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DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2010
·Vol. 139
·期 1
·56-60
·
IF 2.021
Zhang Junli,Chen Xiaorong,Hu Tongjie,Zhang Yuan,Xu Kunling,Yu Yanpeng,Huang Jun
Abstract A highly improved Pd-catalyzed cyanation of aryl chlorides to corresponding benzonitriles was demonstrated in aqueous media. Moreover, Pd-catalyzed cyanation of aryl tosylates and benzenesulfonates with K 4 [Fe(CN) 6 ] was developed under the similar conditions, which extended application scope of the cyanation. Graphical Abstract
研究领域:
有机化学
·
绿色化学
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DOI
高影响因子
CATALYSIS LETTERS
·
2021
·Vol. 152
·期 9
·2688-2694
·
IF 3.186
Cai Mingzhong,Liu Rong,Xu Caifeng,Huang Bin
Pd(OAc) 2 /XPhos–SO 3 Na in a mixture of poly(ethylene glycol) (PEG-400) and water is shown to be a highly efficient catalyst for the cyanation of aryl chlorides with potassium ferrocyanide. The reaction proceeded smoothly at 100 or 120 ºC with K 2 CO 3 or KOAc as base, delivering a variety of aromatic nitriles in good to excellent yields. The isolation of the crude products is facilely performed by extraction with cyclohexane and more importantly, both expensive Pd(OAc) 2 and XPhos–SO 3 Na in PEG-400/H 2 O system could be easily recycled and reused at least six times without any apparent loss of catalytic efficiency. Graphical Abstract Palladium-catalyzed cyanation of aryl chlorides with potassium ferrocyanide leading to aryl nitriles by using Pd(OAc) 2 /XPhos–SO 3 Na/PEG-400/H 2 O as a highly efficient and recyclable catalytic system is described.
研究领域:
有机化学
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绿色化学
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产品关联
DOI
高影响因子
CHEMICAL PAPERS
·
2017
·Vol. 69
·期 4
·596-603
·
IF 1.258
Zhang Yu-Peng,Hu Xiao-Chun,Li Zheng
The conjugate hydrocyanation of α -cyanoacrylates through chemoselective 1,4-addition to synthesise α,β -dicyanopropanoates by one-pot two-step procedure using potassium hexacyanoferrate(II) as an eco-friendly cyanide source, benzoyl chloride as a promoter and potassium carbonate as a catalyst is described. The advantages of this protocol are use of a non-toxic, non-volatile and inexpensive cyanating reagent, high product yields and simple working procedure.
研究领域:
有机化学
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绿色合成化学
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产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2018
·Vol. 13
·期 18
·2708-2713
·
IF 3.692
Haiwen Yu,Siqi Xu,Yijiang Liu,Hongbiao Chen,Huaming Li
Graphical Top of the POPs : A porous organic poly(triphenylimidazole) was loaded with ultrafine palladium nanoparticles and the resultant catalyst (Pd@PTPI-Me) exhibited superior catalytic activity and recyclability for the cyanation of aryl iodides. A new porous organic poly(triphenylimidazole), PTPI-Me, was prepared through a Yamamoto self-coupling reaction of 2,4,5-tris-(4-bromophenyl)-1-methyl-1 H -imidazole (TPI-Me) in the presence of bis(1,5-cyclooctadiene)nickel(0). The polymer was subsequently decorated with Pd nanoparticles (NPs) to afford a heterogeneous cyanation catalyst, Pd@PTPI-Me. Pd NPs with an average diameter of 2.7 nm were grown within the PTPI-Me framework, owing to the coordination of the imidazole rings to the Pd species. The resultant Pd@PTPI-Me catalyst, with a Pd loading of 0.13 mmol g −1 , exhibited superior catalytic activity for the cyanation of aryl iodides. More importantly, the heterogeneous catalyst was also readily recycled and displayed negligible deactivation after five cycles.
研究领域:
材料化学
·
催化化学
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DOI
PubMed
高影响因子
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
·
2024
·
IF 2.5
Fumeng Yin,Shan Hu,Shuwei Zhu,Shifeng Xing,Hongjun Zhu
Graphical Using mesoporous graphitic carbon nitride (mpg-C 3 N 4 ) as a metal-free heterogeneous photocatalyst was developed for thiocyanation of alkenes under visible light irradiation with oxygen as green oxidant and without any other additives. The present protocol has excellent functional group tolerance and the desired tetrasubstituted alkenyl thiocyanides were obtained in moderate to good yields. Moreover, the recyclable mpg-C 3 N 4 catalyst could be used at least 6 times without significant loss of activities. Using mesoporous graphite carbon nitride (mpg-C 3 N 4 ) as metal-free heterogeneous catalyst, the thiocyanation of ketene dithioacetals was achieved under visible light irradiation with oxygen as green oxidant and without any other additives. The present protocol has excellent functional group tolerance and the desired tetrasubstituted alkenyl thiocyanides were obtained in moderate to good yields. Moreover, the recyclable mpg-C 3 N 4 catalyst could be used at least 6 times without significant loss of activities. A series of mechanistic validation experiments indicated that the reaction involves a radical process.
研究领域:
有机化学
·
催化化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Rong-Xin Zhu,Shi-Qian Jia,Ruizhi Dong,Hui Liu,Shengsheng Yu,Ling-Bao Xing
The significant enhancement in molecular oxygen activation via multilevel supramolecular assembly provides an effective strategy for advancing the design and development of high-efficiency supramolecular photosensitizer. Here, we designed and constructed a multilevel supramolecular assembly based on anthracene derivative (PA), cucurbit[7]uril (CB[7]), poly(sodium 4-styrenesulfonate) (PSS) and commercial dyes Cyanine 5 (Cy5). Among them, PA can efficiently absorb light energy and act as an energy donor, while CB[7] and PSS serve as the primary macrocycle and secondary assembly constraint to prominently enhance the fluorescence emission performance of PA. Meanwhile, Cy5 serves as an energy acceptor and efficiently participates in the fluorescence resonance energy transfer (FRET) process. By leveraging the synergistic effect of the cascade assembly process and FRET, the activation ability of molecular oxygen is significantly enhanced, which leads to an increased generation of superoxide anion radicals (O 2 •− ), thereby facilitating efficient thiocyanation of aniline in an aqueous environment. It is worth noting that compared with PA-CB[7]-PSS, PA-CB[7]-PSS + Cy5 exhibits a higher O 2 •− generation and photocatalytic activity. Meanwhile, the cascade assembly PA-CB[7]-PSS also shows a similar performance improvement compared to PA-CB[7]. This indicates that the cascade assembly and FRET play a crucial role in enhancing O 2 •− generation and photocatalytic activity. This study highlights the crucial role of multilevel supramolecular assembly in the design and development of highly efficient supramolecular photosensitizers.
研究领域:
超分子化学
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光化学
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催化
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材料科学
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有机合成
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Ge-liang Xie,Yang Cao,Sheng-ren Li,Qian-qian Lu,Wei Chen,Shuai Gao,Wei Qiu,Chao He,Zhen Fang,Lujiang Xu
Lignin valorization through catalytic upgrading to nitrogen-containing aromatics represents a critical pathway for sustainable chemical production. Using vanillin, a key lignin depolymerization product, as a platform molecule, we demonstrate the first integrated strategy combining cyanide-free cyanation and gas-phase hydrodeoxygenation (HDO) to synthesize hydroxybenzonitriles (HBNs). Bond dissociation energy (BDE) analysis revealed the cyano group’s selective retention (C≡N: 136.21 kcal/mol vs C–O: 62.44–116.17 kcal/mol), guiding targeted HDO pathway design. A green H2O/HCOOH system achieved 99.2 mol % vanillonitrile yield under mild conditions (85 °C, 12 h), surpassing conventional DMF-based methods. Engineered Mo/TiO2 catalysts with triple functional sites (oxygen vacancies, suitable content of Mo5+, strong metal–support interaction) achieved 57.6% HBN yield in continuous gas-phase HDO, outperforming Mo/ZrO2. The catalyst retained 90% of its initial activity over eight cycles due to enhanced metal–support interactions. This work establishes a sustainable route for lignin-to-chemical conversion, advancing catalyst design principles for biomass upgrading.
研究领域:
催化
·
绿色化学
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生物质转化
·
有机合成
·
化学工程
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Xinyu Liu,Bo Tang,Yang Gao,Xiaoyan Qi,Fengming Zhao,Zhaoyang Chen,Yinghong Zhu,Huajun Zheng,Youqun Chu
An efficient indirect electrosynthesis method for the preparation of 2,6-dichlorobenzonitrile has been developed, utilizing iodide ions as a redox mediator in the presence of acetate ions. The experimental results demonstrate that the addition of OAc − ions significantly influences the electrochemical behavior of I − ions, primarily through the complexation of OAc − ions with I 2 and I + species. This complexation facilitates the formation of [I 2 OAc] − ions, which are readily oxidized at the anode to generate I + ions. These I + ions are subsequently stabilized by OAc − ions, forming highly electrophilic [IOAc 2 ] − species. This mechanism leads to an enhanced yield of 2,6-dichlorobenzonitrile in the iodide-mediated indirect electrosynthesis reaction. Furthermore, compared to previous systems employing chloride ions, the present method exhibits a higher cyanation yield, indicating that [IOAc₂]⁻ ions possess superior electrophilic activity relative to [ICl₂]⁻ ions, thereby promoting the efficient cyanation of 2,6-dichlorobenzaldehyde. The method also demonstrates broad applicability, achieving good yields with various aromatic aldehydes. These findings highlight the potential of this approach for the synthesis of aromatic nitriles, particularly in the indirect electrosynthesis of nitriles from their corresponding aldehyde precursors. This work provides a promising strategy for the development of sustainable and efficient electrochemical synthesis methods in organic chemistry.
研究领域:
有机电化学
·
电化学合成
·
有机化学
·
氧化还原化学
·
氰化反应
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）