Xiao-Jun Guo, Xiao Zhang, Zhuang-Zhuang Chang, Xiao-Qiang Zhou, Bo Liu, Jun-Yan Li, Zhan-Qing Liu
{"title":"Mild and Efficient Synthesis of m-Aminobenzamides via Palladium-Catalyzed Aminocarbonylation of m-Iodoanilines With Amine Hydrochlorides","authors":"Xiao-Jun Guo, Xiao Zhang, Zhuang-Zhuang Chang, Xiao-Qiang Zhou, Bo Liu, Jun-Yan Li, Zhan-Qing Liu","doi":"10.1002/ajoc.70509","DOIUrl":"https://doi.org/10.1002/ajoc.70509","url":null,"abstract":"<div>\u0000 \u0000 <p>An efficient palladium-catalyzed aminocarbonylation protocol for the synthesis of <i>m</i>-aminobenzamides has been developed using <i>m</i>-iodoanilines and amine hydrochlorides under 1 atm of carbon monoxide (CO). This transformation proceeds under mild conditions, featuring excellent functional group tolerance, broad substrate scope, and high isolated yields. Remarkably, the free amino group of <i>m</i>-iodoaniline remains unprotected throughout the reaction. This protocol provides a practical and complementary synthetic route to structurally diverse <i>m</i>-aminobenzamides.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meng Ge, Guangshu Yuan, Ruiqi Li, Xu Zhang, Lei Yu
{"title":"Biochar-Supported Cu-MOF as a Highly Efficient Catalyst for the Condensation of L-Lactic Acid to L-Lactide","authors":"Meng Ge, Guangshu Yuan, Ruiqi Li, Xu Zhang, Lei Yu","doi":"10.1002/ajoc.70490","DOIUrl":"https://doi.org/10.1002/ajoc.70490","url":null,"abstract":"<div>\u0000 \u0000 <p>Polylactic acid (PLA) is a key biodegradable polymer for green manufacturing. <i>L</i>-Lactide, the essential intermediate for PLA synthesis, urgently requires efficient and sustainable catalytic production. In this study, a chicken manure-derived biochar-supported Cu-MOF (HKUST-1@biochar) was fabricated as a novel heterogeneous catalyst for <i>L</i>-lactic acid condensation to <i>L</i>-lactide. The biochar support significantly exposed active Cu<sup>2</sup><sup>+</sup> sites and boosted catalytic efficiency. The catalyst afforded <i>L</i>-lactide with 73.3% yield and 97.8% optical purity, and maintained high activity over five recycling runs. This work achieves waste valorization and green catalysis simultaneously, offering a practical, low-cost route for industrial <i>L</i>-lactide production.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yueji Luo, Boen Mao, Cheng Ye, Jieni Lei, Yaqian Li, Zi Yang
{"title":"Rh-Catalyzed [5+2] Annulation of Aryl Oximes With Maleimides to Access Azepino[3,2-b]indoles","authors":"Yueji Luo, Boen Mao, Cheng Ye, Jieni Lei, Yaqian Li, Zi Yang","doi":"10.1002/ajoc.70514","DOIUrl":"https://doi.org/10.1002/ajoc.70514","url":null,"abstract":"<div>\u0000 \u0000 <p>Azepino[3,2-<i>b</i>]indoles are a class of pharmaceutically significant molecules containing an aza-seven-membered ring system. However, synthetic approaches to this scaffold remain limited and typically require multiple steps. Herein, we demonstrate the feasibility of synthesizing azepino[3,2-<i>b]</i>indoles via a Rh(III)-catalyzed C─H activation followed by an annulation process using readily available ayrl oximes and maleimides. Moreover, this methodology features a short reaction time and broad functional group compatibility.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic Catalytic Mechanism of Glutarimide Ionic Liquids in Atmospheric Pressure Cycloaddition of CO2 With Epichlorohydrin","authors":"Xin Wang, Bingxin Wang, Ruiyu Zhang, Huali Jia, Chenyi Cai, Zichen Zhao, Xiaoming Zhu","doi":"10.1002/ajoc.70508","DOIUrl":"https://doi.org/10.1002/ajoc.70508","url":null,"abstract":"<div>\u0000 \u0000 <p>The conversion of CO<sub>2</sub> into cyclic carbonates under mild conditions remained challenging due to the thermodynamic stability of CO<sub>2</sub>. Herein, a series of glutarimide-based ionic liquids was developed for the cycloaddition of CO<sub>2</sub> to epoxides. Among them, [BZTMA][GLU] exhibited the highest activity, affording chloropropylene carbonate in 99.5% yield at 70°C within 7 h using only 2 mol% catalyst under 0.1 MPa CO<sub>2</sub>. Systematic variation of the cation ([BZTMA]<sup>+</sup>, [HDBU]<sup>+</sup>, [CH]<sup>+</sup>), and anion ([GLU]<sup>–</sup>, [Im]<sup>–</sup>, [Pth]<sup>–</sup>) revealed that catalytic performance was governed by a balance between CO<sub>2</sub> absorption capacity and cation-anion interaction strength; excessively strong ion pairing counteracted the benefit of high CO<sub>2</sub> absorption. The catalyst was readily recovered and retained 95.9% yield after eight cycles. Substrate scope studies demonstrated that steric hindrance of both the epoxide and the anion critically influenced reactivity. This work established a clear structure-activity relationship for the rational design of ionic liquid catalysts in CO<sub>2</sub> fixation.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Unified Photoredox Platform for Divergent Dual C─H/N─H Selenylation to Access N,C- and C,C-Diselenides","authors":"Fengxiang Zhu, Ying Hou, Xiao-Feng Wu","doi":"10.1002/ajoc.70506","DOIUrl":"https://doi.org/10.1002/ajoc.70506","url":null,"abstract":"<p>We report a visible-light photoredox-catalyzed strategy for the divergent dual selenylation of inert C─H and N─H bonds. Using a single catalytic system with Ru(bpy)<sub>3</sub>Cl<sub>2</sub>·6H<sub>2</sub>O and diselenides, arylamines and indoles are selectively converted to distinct N,C- or C,C-disubstituted organoselenides, respectively. This mild, redox-neutral protocol features broad substrate scope, excellent regioselectivity, and operational simplicity, providing a unified and step-economical route to valuable diselenides. Mechanistic studies support a radical-based pathway.</p>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajoc.70506","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinyue Dong, Xiao-Jin Sun, Yi-Lin Wang, Can Zhang, Xiao-Tian Wang, Xin-Ran Shi, Zhan-Yong Wang
{"title":"Electrochemical Synthesis of Ketones","authors":"Xinyue Dong, Xiao-Jin Sun, Yi-Lin Wang, Can Zhang, Xiao-Tian Wang, Xin-Ran Shi, Zhan-Yong Wang","doi":"10.1002/ajoc.70503","DOIUrl":"https://doi.org/10.1002/ajoc.70503","url":null,"abstract":"<div>\u0000 \u0000 <p>Ketones are important organic compounds. Electrosynthesis offers a mild and sustainable route for ketone synthesis. In this review, rather than summarizing reactions by substrate class or catalytic system, we adopt a mechanistically guided classification based on the origin of the carbonyl oxygen atom. Recent progress is accordingly divided into two categories: (1) transformations using non-ketone oxygen sources (water, O<sub>2</sub>, CO, CO<sub>2</sub>, TEMPO, alcohols, acids, esters, and aldehydes). (2) functionalization of simple ketone-containing molecules to access complex ketones. Organizing these methods according to oxygen source provides a unified mechanistic overview and practical guidance for reagent selection.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recent Developments in the Biological Activities of Trametes sanguinea (Syn. Pycnoporus sanguineus) and Its Extracts","authors":"Jing-Ping Hu, Ning-Yu Guo, Xiao-Yi Cheng, Xiao Zhang, Xiu-Wen Jia, Chun Zhang, Ya-Ping Han, Li-Zeng Peng","doi":"10.1002/ajoc.70507","DOIUrl":"https://doi.org/10.1002/ajoc.70507","url":null,"abstract":"<div>\u0000 \u0000 <p><i>Trametes sanguinea</i> (syn. <i>Pycnoporus sanguineus</i>), as an important white-rot fungus, has gained significant attention in recent years due to its remarkable potential in both pharmacological and biodegradation applications. The past half-decade has witnessed a dramatic proliferation of studies concerning the pharmacological properties of its extracts, wherein numerous bioactive metabolites have been elucidated and structurally defined. Mechanistic investigations have deepened our understanding of these bioactive substances, offering new avenues for therapeutic applications. With respect to biodegradation, <i>T. sanguinea</i> exhibits prominent capacity for degrading organic pollutants within heavy metal-contaminated environments. This review summarizes the latest progress in the biological activity of <i>T. sanguinea</i> and its extracts, which can be divided into two categories: 1) Pharmacological activity; 2) degradation activity.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nian-Qi Chen, Karthick Govindan, Chia-Yu Chien, Tamilselvan Duraisamy, Wei-Yu Lin
{"title":"Direct Synthesis of 2-Aryl Quinolone Derivatives via Oxidative Cyclization: Batch Versus Continuous-Flow","authors":"Nian-Qi Chen, Karthick Govindan, Chia-Yu Chien, Tamilselvan Duraisamy, Wei-Yu Lin","doi":"10.1002/ajoc.70505","DOIUrl":"https://doi.org/10.1002/ajoc.70505","url":null,"abstract":"<p>Efficient access to structurally important N-heterocycles continues to be a major focus in synthetic chemistry owing to their broad relevance in medicinal and functional molecule synthesis. In this study, we report an efficient and practical metal-free p-TsOH·H<sub>2</sub>O-promoted protocol for the synthesis of 2-arylquinolones under batch and continuous-flow conditions. The strategy provides two synthetic routes to 2-arylquinolones; direct cyclization of readily accessible 2-aminochalcones and a convenient one-pot synthesis from 2-aminoacetophenones and aldehydes, thereby avoiding the need to pre-isolate the aminochalcone intermediates. The transformation proceeds effectively and accommodates a broad range of substrates bearing electron-donating as well as electron-withdrawing groups, delivering the desired 2-arylquinolones in good to excellent yields. Importantly, translation of the methodology to continuous-flow processing enabled rapid and selective access to both 2-phenyl-2,3-dihydroquinolin-4(1<i>H</i>)-ones and 2-arylquinolones within minutes by adjusting the reaction atmosphere. The scalability and robustness of the protocol are demonstrated through gram-scale experiments, highlighting its practical utility for synthetic applications.</p>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajoc.70505","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Metal-Free TBN-Mediated Regioselective Azolation of Phenols","authors":"Yongliang Pan, Xianbo Huang, Liyuan Hou, Ling Lin, Yu Tang, Pengju Feng","doi":"10.1002/ajoc.70510","DOIUrl":"https://doi.org/10.1002/ajoc.70510","url":null,"abstract":"<div>\u0000 \u0000 <p>A metal-free, ortho-selective C–H amination of phenols with azoles using TBN as the sole mediator is reported. The reaction provides direct access to N-arylazoles, key scaffolds in pharmaceuticals and agrochemicals, under mild conditions (room temperature, inert atmosphere) without transition-metal catalysts, prefunctionalized arenes, or external oxidants. A wide range of phenols and azoles (pyrazoles, imidazoles, triazoles, and tetrazoles) are compatible, affording ortho-aminated products in good to excellent yields (up to 94%) with exceptional regiocontrol. Gram-scale synthesis (2.08 g, 77% yield) and subsequent derivatizations demonstrate synthetic utility. Mechanistic studies support a radical pathway involving TBN-generated nitrogen-centered radicals.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tien V. Le, Hoang T. Diep, Hoang V. M. Trinh, Vu H. Luu, Tung T. Nguyen
{"title":"Elemental Sulfur Mediated Cyclization of Amidoximes and Sulfoxonium Ylides to Access 5-Acyl-1,2,4-Oxadiazoles","authors":"Tien V. Le, Hoang T. Diep, Hoang V. M. Trinh, Vu H. Luu, Tung T. Nguyen","doi":"10.1002/ajoc.70513","DOIUrl":"https://doi.org/10.1002/ajoc.70513","url":null,"abstract":"<div>\u0000 \u0000 <p>We report herein a method for the synthesis of 1,2,4-oxadiazoles via an annulation of amidoximes and sulfoxonium ylides. Elemental sulfur was utilized to activate the methine carbon in the sulfoxonium ylide, which then acts as an active electrophilic center. A wide range of functionalities, including halogen, ester, and tertiary amine groups, were compatible with the reaction conditions. Products were also obtained from alkyl sulfoxonium ylide starting materials, which overcame the current limitation of available methods.</p>\u0000 </div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"15 8","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}