Green Chemistry最新文献_第3页

Chemodivergent alkylation of trifluoromethyl alkenes via photocatalytic coupling with alkanes† 通过光催化与烷烃偶联实现三氟甲基烯的化学歧化烷基化。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-04 DOI: 10.1039/D4GC04176C

Pol Martínez-Balart, Álvaro Velasco-Rubio, Sergio Barbeira-Arán, Hugo Jiménez-Cristóbal and Martín Fañanás-Mastral

引用次数: 0

Visible light-induced strain-release transformations of bicyclo[1.1.0]butanes 可见光诱导的双环[1.1.0]丁烷应变释放转化

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-04 DOI: 10.1039/D4GC03193H

Qing-Bao Zhang, Feng Li, Bin Pan, Shanshan Zhang, Xiang-Guo Yue and Qiang Liu

引用次数: 0

Selective electrosynthesis of aldehydes at industrially relevant current densities via tandem electrochemical–chemical catalysis† 通过串联电化学-化学催化，在工业相关电流密度下选择性电合成醛†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-04 DOI: 10.1039/D4GC04536J

Ting Lin, Menglu Cai, Huijie Chen and Yiming Mo

{"title":"Selective electrosynthesis of aldehydes at industrially relevant current densities via tandem electrochemical–chemical catalysis†","authors":"Ting Lin, Menglu Cai, Huijie Chen and Yiming Mo","doi":"10.1039/D4GC04536J","DOIUrl":"https://doi.org/10.1039/D4GC04536J","url":null,"abstract":"Organic electrochemical synthesis, a sustainable alternative to traditional organic synthesis, faces challenges in practical applications, such as limited current density, difficulty in recycling homogeneous electrochemical mediators, and large waste supporting electrolyte generation. In this work, we addressed these challenges by proposing a tandem electrochemical–chemical catalysis strategy, using selective alcohol electrooxidation to valuable aldehydes as a model transformation. Hypochlorite electro-generation and heterogeneous TEMPO-catalyzed alcohol oxidation were decoupled spatially, allowing each step to proceed independently under high rates and selectivity. Consequently, this strategy achieved industrially relevant current densities of 300–600 mA cm−2 with 64.7–81.8% faradaic efficiencies, resulting in a space–time yield (STY) of up to 516.95 kg (m3 h)−1 for benzaldehyde synthesis that significantly surpassed existing strategies. In addition, this strategy utilized the silica-supported TEMPO catalyst filled in a packed-bed reactor to achieve efficient single-pass conversion of alcohols to the corresponding aldehydes without the need for downstream catalyst separation, substantially reducing energy consumption for downstream separation. Furthermore, we developed a closed-loop tandem electrochemical–chemical catalysis system for gram-scale steroidal aldehyde synthesis, which incorporated an inline liquid–liquid separator for electrolyte recycling, thus significantly reducing the supporting electrolyte waste generation, which aligns with the principles of green chemistry and sustainable development. This work demonstrates a viable approach for the electrosynthesis of value-added organic intermediates under practical current densities with minimal waste electrolyte.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shell biorefineries: mixed biofuel production from chitin 壳牌生物炼油厂：利用甲壳素生产混合生物燃料

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-03 DOI: 10.1039/D4GC03761H

Hao Huang, Guangping Zhou, Xiaolan Cai, Min Zhuang and Shaoqu Xie

引用次数: 0

Catalytic synthesis of renewable lubricant base oils with methyl oleate and aromatics† 用油酸甲酯和芳烃催化合成可再生润滑油基础油†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-03 DOI: 10.1039/D4GC03448A

Binbin Zhou, Nan Wang, Sibao Liu and Guozhu Liu

{"title":"Catalytic synthesis of renewable lubricant base oils with methyl oleate and aromatics†","authors":"Binbin Zhou, Nan Wang, Sibao Liu and Guozhu Liu","doi":"10.1039/D4GC03448A","DOIUrl":"https://doi.org/10.1039/D4GC03448A","url":null,"abstract":"Renewable lubricant base oils derived from biomass can effectively mitigate environmental challenges while exhibiting exceptional properties. Herein, we propose a novel approach for the synthesis of ester-based and alkane-based renewable lubricant base oils, achieving an impressive yield of up to 99%. This strategy involves the utilization of methyl oleate and biomass-derived aromatics through two distinct chemistries: alkylation and alkylation followed by hydrodeoxygenation (HDO). Among the various Lewis acid catalysts screened, AlCl3 demonstrated superior performance and achieved a remarkable maximum yield of 99% for the alkylation product under the optimized reaction conditions. Subsequent hydrodeoxygenation (HDO) of these alkylation products using the Ir-ReOx/SiO2 catalyst resulted in the production of alkane-based lubricant base oils, with an impressive maximum yield of 96.3%. The molecular size and branching of ester-based and alkane-based products can be finely adjusted by employing diverse aromatic compounds during the alkylation process, thereby enabling tuning of their lubricant properties. The as-synthesized base oils exhibit superior properties to petroleum-derived group III base oils and demonstrate comparable performance to synthetic ester and PAO base oils. The presented strategy for synthesizing renewable base oils offers a sustainable alternative to petroleum-derived counterparts, thereby potentially mitigating greenhouse gas emissions.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemistry-enabled Rh-catalyzed regioselective [4 + 1] and [4 + 2] cycloaddition of benzoic acid with alkynyl esters/amides†‡ 电化学催化的 Rh 催化苯甲酸与炔基酯/酰胺的区域选择性 [4 + 1] 和 [4 + 2] 环加成反应†‡

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-02 DOI: 10.1039/D4GC03753G

Wei-Jung Chiu and Chung-Ming Sun

引用次数: 0

Photocatalytic acylation of lysine screened using a microfluidic-based chemical robotic system† 利用微流体化学机器人系统筛选赖氨酸的光催化酰化反应†.

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-02 DOI: 10.1039/D4GC03562C

Zhanfeng Hou, Chuan Wan, Heming Jiang, Yuena Wang, Yun Xing, Jinpeng Wang, Zhihong Liu, Xiaochun Guo, Yuhao An, Wei Han, Rui Wang, Xinhao Zhang, Feng Yin and Zigang Li

引用次数: 0

Metal-free photoinduced-radical hydrocyclization of 2-isocyanides: a unified synthetic approach to facilely assemble diverse N-heteroarenes† 2-异氰酸酯的无金属光诱导-自由基加氢环化：轻松组装多种 N-杂环†的统一合成方法

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-02 DOI: 10.1039/D4GC03774J

Ziyi Wang, Haonan Wei, Jinrong Du and Zhijun Zuo

引用次数: 0

A spatially integrated electrochemical–thermal tandem reaction for continuous mild synthesis of propylene oxide† 用于环氧丙烷连续温和合成的空间集成电化学-热串联反应

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-02 DOI: 10.1039/D4GC03455D

Yuefeng Qiu, Peng Jiang, Wenkai Ye, Jiahao Hu, Bin Zhang, Tuo Ji, Liwen Mu, Xin Feng, Xiaohua Lu and Jiahua Zhu

{"title":"A spatially integrated electrochemical–thermal tandem reaction for continuous mild synthesis of propylene oxide†","authors":"Yuefeng Qiu, Peng Jiang, Wenkai Ye, Jiahao Hu, Bin Zhang, Tuo Ji, Liwen Mu, Xin Feng, Xiaohua Lu and Jiahua Zhu","doi":"10.1039/D4GC03455D","DOIUrl":"https://doi.org/10.1039/D4GC03455D","url":null,"abstract":"An electrochemical–thermal tandem reaction system was designed in this work and enabled the highly efficient synthesis of propylene oxide (PO) at 1 atm without the use of H2O2. The electrochemical part produced OOH− through a 2e− oxygen reduction reaction, which migrated and distributed in the full space of a chamber filled with a mixture of solid electrolyte particles and modified TS-1 (m-TS-1) catalysts. Mediated by the relay of OOH− and protic solvent methanol, full space tandem reactions were achieved with a high PO selectivity of 95.2% and a productivity of 319.75 mmol gecat−1 h−1. A mechanistic study revealed that the m-TS-1 catalysts accepted the migrated OOH− and formed a Ti-OOH intermediate, which played a key role in relaying the tandem reactions for an efficient propylene epoxidation reaction. Techno-economic analysis and life-cycle assessment revealed favorable figures for the proposed process compared to the conventional process.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulatable selective synthesis of benzofurans and coumarins from aryl propargyl ethers via an electrochemical tandem cyclization reaction† 通过电化学串联环化反应从芳基丙炔醚中选择性地合成苯并呋喃和香豆素

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-10-02 DOI: 10.1039/D4GC03842H

Zhaoyue Feng, Xueyi Guan, Haiyang Ma, Yingsibing Fan, Ping Liu and Peipei Sun

引用次数: 0