Green Chemistry最新文献_第8页

Guidelines for the new Green Foundation box 新绿色基金箱指南

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-24 DOI: 10.1039/D4GC90099E

引用次数: 0

Green and controllable synthesis of symmetrical and unsymmetrical difluoromethylated diarylmethanes via a direct bisarylation strategy enabled by an HFIP–B(C6F5)3 adduct† 通过 HFIP-B(C6F5)3加合物促成的直接双芳基化策略，绿色可控地合成对称和不对称二氟甲基二芳基甲烷

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-24 DOI: 10.1039/D4GC03917C

Xindi Li, Yiping Zhu, Zhina Gong, Jinshan Li, Jialin Xie, Zhendong Zhao, Jianwei Li and Chunman Jia

引用次数: 0

A sequential flow process of CO2 capture and conversion using cost-effective porous organic polymers† 利用具有成本效益的多孔有机聚合物† 实现二氧化碳捕获和转化的连续流工艺

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-24 DOI: 10.1039/D4GC03494E

Zhongqi Wu, Zhong Li, Lei Hu, Samson Afewerki, Maria Strømme, Qian-Feng Zhang and Chao Xu

{"title":"A sequential flow process of CO2 capture and conversion using cost-effective porous organic polymers†","authors":"Zhongqi Wu, Zhong Li, Lei Hu, Samson Afewerki, Maria Strømme, Qian-Feng Zhang and Chao Xu","doi":"10.1039/D4GC03494E","DOIUrl":"https://doi.org/10.1039/D4GC03494E","url":null,"abstract":"Porous organic polymers (POPs) have shown significant potential for CO2 capture and utilization due to their high surface areas, tunable porosity, high stability, and ease of modification. Developing POPs for CO2 capture and catalytic conversion offers a viable solution to rising CO2 emissions. This study presents POPs composed of pyridine units, serving as dual functional materials that act as sorbents for CO2 capture and as substrates supporting silver chalcogenolate clusters (SCCs) for catalytic CO2 conversion. The scalable and cost-effective synthesis of these POPs enabled the design of pilot-scale breakthrough apparatus with two parallel POP sorbent beds for continuous CO2 capture from simulated flue gas, achieving a high working capacity of 20 Lflue gas kgPOP−1 h−1 for flue gas separation. Given the practical feasibility of using POPs for CO2 capture and the high catalytic activity of POPs loaded with SCCs in CO2 cycloaddition, a sequential process that integrates capturing CO2 from simulated flue gas and directly converting the captured CO2 into oxazolidinone achieves a high space–time yield of up to 9.6 g LPOP−1 day−1 in continuous operation. This study provides a viable strategy for CO2 capture and utilization using cost-effective, dual-functional porous materials.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/gc/d4gc03494e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable photocatalytic synthesis of 2-hydroxybenzofuran-3(2H)-ones using lead-free Cs2AgBiBr6 nanocrystals† 使用无铅 Cs2AgBiBr6 纳米晶体可持续光催化合成 2-羟基苯并呋喃-3(2H)-酮†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-24 DOI: 10.1039/D4GC03834G

Haibo Zhu, Ting Zhong, Liu Yang, Yajing Shen, Qiangwen Fan, Zhanggao Le and Zongbo Xie

引用次数: 0

Correction: Catalyst-free decarboxylative deuteration using tailored photoredox-active carboxylic acids 更正：使用定制的光氧化活性羧酸进行无催化剂脱羧反应

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-23 DOI: 10.1039/D4GC90105C

Shuai Liu, Hongze Liao, Bin Chen, Tengyu Guo, Zhizhen Zhang and Houwen Lin

引用次数: 0

High-temperature water unlocks urea as nitrogen-source towards imidazoles† 高温水释放尿素作为咪唑类化合物的氮源

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-20 DOI: 10.1039/D4GC01705F

Fabián Amaya-García, Lena Schittenhelm and Miriam M. Unterlass

{"title":"High-temperature water unlocks urea as nitrogen-source towards imidazoles†","authors":"Fabián Amaya-García, Lena Schittenhelm and Miriam M. Unterlass","doi":"10.1039/D4GC01705F","DOIUrl":"10.1039/D4GC01705F","url":null,"abstract":"Urea is a non-toxic, harmless, and abundant bulk organic chemical featuring high nitrogen content. Therefore, urea could be a prime green candidate for introducing nitrogen atoms into organic molecules. In this regard, urea in organic synthesis has been mainly employed as building block, component of solvent systems, catalyst, or for pH adjustment, while uses of urea as NH3-source towards the construction of small organic compounds are scarce. Here, nothing but high-temperature water (HTW) is employed to conduct the aquathermolysis of urea, generating NH3 to propel the Debus–Radzsisweski multicomponent reaction (MCR) towards imidazoles. The approach does neither require additional catalysts nor reaction auxiliaries or volatile organic compounds as solvent. Urea was used as N-source in combination with different 1,2-diketones and aldehydes featuring a variety of functional groups towards 23 lophine analogues (190 °C, 1–3 hours). Moreover, the presented synthesis performs equally or better than classical syntheses when acid-sensitive substrates are employed. The greenness of the synthesis using urea in HTW was assessed through green metrics and compared with syntheses reported in the literature in a large-scale fashion. Overall, the reported syntheses feature E-factor and process mass intensity values in ranges comparable to those of syntheses reported in literature.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11414530/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142277409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation on the recovery of lignin from basic [Ch][Lys] systems using low-cost alcohols as anti-solvents under acid-free conditions† 在无酸条件下使用低成本醇类作为抗溶剂从碱性[Ch][Lys]体系中回收木质素的评估†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-20 DOI: 10.1039/D4GC03898C

Yichen Liu, Wanting Zhao, Qizhen Luo, Jipeng Yan and Jian Sun

{"title":"Evaluation on the recovery of lignin from basic [Ch][Lys] systems using low-cost alcohols as anti-solvents under acid-free conditions†","authors":"Yichen Liu, Wanting Zhao, Qizhen Luo, Jipeng Yan and Jian Sun","doi":"10.1039/D4GC03898C","DOIUrl":"https://doi.org/10.1039/D4GC03898C","url":null,"abstract":"Delignification of lignocellulose using basic ionic liquids (BILs) such as choline lysinate ([Ch][Lys]) is a promising method due to its high efficiency, mild conditions, and low toxicity. Typically, the following precipitation of lignin by adding acid media makes it challenging to recycle BILs. Herein, we explored a series of low-cost and recyclable alcohols as anti-solvents, including methanol (MeOH), ethanol (EtOH), iso-propanol (i-PrOH), and tert-butanol (t-BuOH), for recovering [Ch][Lys] and precipitating lignin without adding an acid from water-free [Ch][Lys] (case 1) and aqueous [Ch][Lys] (case 2). For case 1, lignin recovery followed the order of EtOH > i-PrOH > t-BuOH (MeOH was not able to recover lignin and [Ch][Lys]), which was negatively correlated with their pKa values, indicating the effect of the inhibited generation of a basic anion (e.g. EtO− from EtOH) from –NH2 in [Ch][Lys] on lignin precipitation. t-BuOH showed the highest lignin recovery of 99.7%, ensuring the high purity of the recovered [Ch][Lys] (recovery of 94.7%). Lignin deprotonation and depolymerization were detected. For case 2, t-BuOH also facilitated the recovery of lignin from an aqueous lignin–[Ch][Lys] system with a nearly quantitative lignin recovery, yet with lower [Ch][Lys] recovery of 81.7% and 64.0% at the [Ch][Lys] : water ratios (w/w) of 7 : 3 and 1 : 9, respectively. The lower recovery of [Ch][Lys] might be due to the poor dispersity of lignin solid in t-BuOH, and water also enhanced the deprotonation of lignin, thus making lignin precipitation more difficult. Based on the results, a deprotonation-based lignin dissolution mechanism has been proposed, which also helps to understand lignin dissolution and precipitation in a [Ch][Lys]-based system.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524333","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

Biocatalysis as a versatile tool for macrolactonization: comparative evaluation of catalytic and stoichiometric approaches† 生物催化是大内酯化的多功能工具：催化方法和化学方法的比较评估†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-19 DOI: 10.1039/D4GC04167D

Javier Guerrero-Morales and Shawn K. Collins

{"title":"Biocatalysis as a versatile tool for macrolactonization: comparative evaluation of catalytic and stoichiometric approaches†","authors":"Javier Guerrero-Morales and Shawn K. Collins","doi":"10.1039/D4GC04167D","DOIUrl":"https://doi.org/10.1039/D4GC04167D","url":null,"abstract":"Macrolactonization is a challenging process where high dilution and temperatures can extend reaction times and promote reagent degradation. Biocatalysis is a versatile strategy for synthesis but not traditionally associated within the toolbox of organic chemists for macrocyclization. Macrolactonization has been investigated using modern methods employing both catalysis and stoichiometric activation strategies on 20 different substrates with differing ring sizes and types (cyclophanes, macrolactones, macrodiolides) and structural features at the reaction site (central vs. planar chirality; primary vs. secondary alcohols). The data demonstrates that of all protocols examined, the biocatalytic route was superior, providing the highest average yields across all classes of macrocycles studied. From the stoichiometric activation strategies investigated, the Yamaguchi macrolactonization was the most versatile in terms of ring size and nature. Despite the advantages of biocatalytic macrolactonization, advances in developing supported, versatile non-enantioselective lipases would actually represent a useful tool in molecular synthesis.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430893","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

Light-driven ultrafast dual C–C cleavage and coupling of dihydroxyacetone into high-purity carbon monoxide and ethylene glycol† 光驱动的超快双 C-C 裂解以及将二羟基丙酮偶联为高纯度一氧化碳和乙二醇†的过程

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-19 DOI: 10.1039/D4GC04180A

Fanhao Kong, Hongru Zhou, Zhiwei Chen, Zhaolin Dou and Min Wang

{"title":"Light-driven ultrafast dual C–C cleavage and coupling of dihydroxyacetone into high-purity carbon monoxide and ethylene glycol†","authors":"Fanhao Kong, Hongru Zhou, Zhiwei Chen, Zhaolin Dou and Min Wang","doi":"10.1039/D4GC04180A","DOIUrl":"https://doi.org/10.1039/D4GC04180A","url":null,"abstract":"Bulk chemicals, such as carbon monoxide (CO) and ethylene glycol (EG), derived from biomass feedstocks instead of traditional fossil fuels present a renewable and sustainable energy alternative. However, their direct production under ambient conditions with high purity is challenging. Herein, we report a distinctive photochemical process to produce CO together with EG through the ultrafast C–C cleavage of dihydroxyacetone induced by ultraviolet illumination at ambient temperature and pressure in water. The obtained CO yield was nearly 98% with a high purity above 99.9%, and the EG yield was nearly 80%. The two hydroxyls at the alpha carbons of dihydroxyacetone reduced the energy barriers of photoexcitation and the radical reaction, accounting for fast C–C cleavage to produce CO and EG. A home-built flow reactor achieved the continuous production of CO and EG over 1000 h and maintained efficient operation for 100 h in the sunlight-electricity-ultraviolet light mode. Benefitting from the fast reaction rate and high-purity gas generation, a safe, laboratory-scale, portable, ready-to-use CO generator was designed and assembled. The maximum CO production rate of the CO generator reached 30 mL min−1, and CO purity reached over 99% for 25 L.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524292","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

Solid phase peptide synthesis using side-chain unprotected arginine and histidine with Oxyma Pure/TBEC in green solvents† 使用 Oxyma Pure/TBEC 在绿色溶剂中合成侧链未受保护的精氨酸和组氨酸的固相肽†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-09-18 DOI: 10.1039/D4GC03209H

Tommaso Fantoni, Andrea Orlandin, Ilaria Di Stefano, Marco Macis, Alessandra Tolomelli, Antonio Ricci, Walter Cabri and Lucia Ferrazzano

引用次数: 0