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Electrochemical switching in mechanically interlocked molecules (MIMs)

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00061G, Review Article
Ayush Bhadani, Murugavel Kathiresan
Mechanically interlocked molecules (MIMs) which include rotaxanes and catenanes are formed by the mechanical linking of two or more components and has the ability to switch between different states in the presence of an external stimuli.
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Metal-Free Cascade O-H Double Insertion Between I(III)/S(VI)-Ylides, Carboxylic Acids, and Alcohols: Modular Access to Unsymmetrical α,α-O,O-Substituted Ketones

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00453A, Research Article
Shang-Shi Zhang, Jiaohang Wei, Wen-Xuan Zou, Qiong Hu, Mei-Zhu Bao, Dan-Ting Shen, Lin Xiao, Jia-Lin Song, Xiang Liu
The synthesis of unsymmetrical α,α-O,O-substituted ketones via O-H double insertion is appealing but remains constrained due to the lack of compatible coupling partners or uncontrollable selectivity. Herein, we present a...
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Base-induced azofluoroalkylation of unactivated alkenes via halogen atom transfer

Org. Chem. Front., 2024, 11,2161-2170
DOI: 10.1039/D3QO02114A, Research Article
Jing Zhang, Yanchuang Zhao, Yu-Yi Zhu, Peng Lei, Hanru Liu, Chang-Sheng Wang, Shuya Xing, Yong Liu, Shao-Fei Ni, Thomas Castanheiro, Li-Wen Xu, Xinxin Shao
A base-induced three-components coupling employing unactivated alkenes, fluoroalkyl iodides and diazonium salts under mild reaction conditions has been developed.
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Sulfamide instead of urea in Biginelli reaction: from black box to reality

Org. Chem. Front., 2024, 11,2155-2160
DOI: 10.1039/D3QO01926H, Research Article
Alexander Yu. Lyapunov, Andriy V. Tarnovskiy, Sergey Yu. Boron, Eduard B. Rusanov, Galyna P. Grabchuk, Dmytro M. Volochnyuk, Serhiy V. Ryabukhin
The scope and limitations of the classical Biginelli reaction have been expanded to principally novel substrates: sulfamide and its monosubstituted analogues.
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Stereoselective skeletal modification of tryptanthrins to install chiral piperidine-2-ones enabled by Brønsted acid catalysis

Org. Chem. Front., 2024, 11,2171-2177
DOI: 10.1039/D3QO02029K, Research Article
Rong Zeng, Xiang Zhang, Yuan-Yuan Lei, Zhuo-Zhuo Zhang, Min Jiang, Qing-Zhu Li, Jun-Long Li, Bo Han
An asymmetric formal [4 + 2] cyclisation between azlactones and aza-dienes derived from simple tryptanthrins has been developed. With this established protocol, yielding a series of novel piperidine-2-one-fused tryptanthrins with up to >99 : 1 er under mild conditions.
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Dynamic kinetic resolution of α-F-β-ketone amides (esters) via Ir/f-diaphos-catalyzed asymmetric hydrogenation

Org. Chem. Front., 2024, 11,2201-2207
DOI: 10.1039/D4QO00125G, Research Article
Pengtao Yang, Dingguo Song, Lingxin Chen, Xianghua Zhao, Yirui Chen, Feiyang Shen, Fei Ling, Weihui Zhong
Highly reactive and highly stereoselective asymmetric hydrogenation of α-F-β-ketone amides (esters) via Ir/f-diaphos-catalyzed dynamic kinetic resolution is reported.
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Rhodium-catalyzed C–C bond alkenylation and arylation of α-branched N-sulfonyl amines

Org. Chem. Front., 2024, 11,2182-2188
DOI: 10.1039/D3QO02140H, Research Article
Lun Xu, Yucheng Liu, Hang Shi, Lun Li
In this work, we described a rhodium-catalyzed C–C bond cleavage of α-branched amines via β-carbon elimination, then formed a five-membered rhodacycle intermediate, which can be captured by styrene(alkenylation) or silane(arylation).
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Visible light/copper catalysis enabled Heck-like coupling between alkenes and cyclic sulfonium salts via selective C–S bond cleavage

Org. Chem. Front., 2024, 11,2195-2200
DOI: 10.1039/D3QO02009F, Research Article
Xianqin Liu, Xufeng Li, Linyuan Wang, Yongjia Shi, Jian Lv, Daoshan Yang
A Heck-like coupling of cyclic sulfonium salts with alkenes via selective C–S bond cleavage using a copper complex as a photosensitizer through a visible-light-driven redox-neutral process has been developed.
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Electrode-switchable: exploring this new strategy to achieve regiodivergent azidoiodination of alkenes

Org. Chem. Front., 2024, 11,2189-2194
DOI: 10.1039/D3QO01935G, Research Article
Xin-Lei Sun, Chen-Xi Xia, Yue Ren, Yu-Jin Li, Zhi-Qian Cao, Ling-Guo Meng
An “electrode-switchable” organic electrochemistry method for the azidoiodination of alkenes, where the choice of anode dictates the regiodivergent alkene azidoiodination, reveals a novel pathway for controlled regioisomers.
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Origin of site-selectivity of hydrogen atom transfer in carbohydrate C–H alkylations via photoredox catalysis

Org. Chem. Front., 2024, 11,2269-2276
DOI: 10.1039/D4QO00073K, Research Article
Yujie Ji, Lingfei Hu, Han Gao, Yan-Bo Wu, Xiangying Lv, Gang Lu
Two major factors, i.e., C–H σ orbital energy and C–H BDE, account for the HAT site-selectivity of carbohydrates with the quinuclidine radical cation.
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Electron donor–acceptor complex photoactivation for deaminative alkynylation, alkenylation and allenylation: a comprehensive study

Org. Chem. Front., 2024, 11,2231-2240
DOI: 10.1039/D4QO00177J, Research Article
Romain Lapierre, Lina Truong, Matthieu Hedouin, Hassan Oulyadi, Bruno Schiavi, Alexandre Jean, Philippe Jubault, Thomas Poisson
Herein, we disclose our study toward photoinduced deaminative alkynylation, alkenylation and allenylation.
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Fe-catalyzed B–H and Si–H insertion reactions of gem-dihaloalkanes

Org. Chem. Front., 2024, 11,2241-2248
DOI: 10.1039/D4QO00136B, Research Article
Xinyu Wang, Zhaobin Wang
We present an approach involving Fe-catalyzed B–H and Si–H insertion of gem-dichloroalkanes. In contrast to previous strategies, our method uses gem-dihaloalkanes as non-stabilized carbene precursors and operates through a radical reaction pathway.
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Frustrated Lewis pair chemistry of alkynes

Org. Chem. Front., 2024, 11,2375-2396
DOI: 10.1039/D4QO00217B, Review Article
Jing Guo, Maying Yan, Douglas W. Stephan
This review is focused on the chemistry of frustrated Lewis pairs (FLPs) with alkynes and surveys the range of stoichiometric and catalytic reactions enabled by this concept.
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Photoinduced alkylation of pyrazolones via β-scission of unstrained aliphatic alcohol derivatives

Org. Chem. Front., 2024, 11,2289-2296
DOI: 10.1039/D4QO00077C, Research Article
Xinxin Geng, Pan Tao, Yujun Li, Ke Zheng
An efficient radical approach was reported for the transformation of unstrained aliphatic alcohols through the β-scission of alkoxyl radicals.
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Nickel/photoredox-catalyzed carbonylative transformations of α-phosphorus-, α-sulfur-, and α-boron-substituted alkyl halides

Org. Chem. Front., 2024, 11,2297-2305
DOI: 10.1039/D4QO00167B, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Le-Cheng Wang, Xiao-Feng Wu
A novel dual nickel/photoredox catalyzed direct amino- and alkoxycarbonylation of α-heteroatom substituted organohalides has been developed.
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Prins cyclization of 1,3-dioxinone: synthesis of 11-epi-badkhysin

Org. Chem. Front., 2024, 11,2332-2338
DOI: 10.1039/D4QO00162A, Research Article
Xiaoliang Xu, Ping Hua, Yiren Xu, Baoqing He, Jingfeng Zhao, Liang Li, Wen Chen, Hongbin Zhang
The asymmetric synthesis of highly functional 11-epi-badkhysin has been accomplished using a structure-unit based approach.
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Advancement in the C–H bond alkylation of (hetero)arenes catalyzed by the most abundant transition metal–iron

Org. Chem. Front., 2024, 11,2397-2417
DOI: 10.1039/D4QO00063C, Review Article
Chandini Pradhan, Benudhar Punji
Advancement in the direct C–H bond alkylation of arenes and heteroarenes using the catalysts based on the most abundant transition metal, iron, is summarized.
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Assembly of ionic supramolecular polymers using a decacationic pillar[5]arene to noncovalently crosslink hyaluronic acid for short DNA delivery

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00447G, Research Article
Qian Li, Danying Ma, Yue-Yang Liu, Hui Wang, Wei Zhou, Dan-Wei Zhang, Zhan-Ting Li
A multicationic pillar[5]arene noncovalently crosslinks hyaluronic acid to afford ionic supramolecular polymers for intramolecular delivery of short DNA.
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Aculeatones A and B, epimeric lovastatin derivatives with a 6/6/3-tricyclic carbon skeleton from Aspergillus aculeatus and their chemical transformation

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00351A, Research Article
Fei Liu, Fengqing Wang, Qin Li, Bingbing Dai, Weiguang Sun, Jianguo Li, Chunmei Chen, Yonghui Zhang, Hucheng Zhu
Lovastatin derivatives aculeatones A–F (1–6) with lipid-lowering activity were isolated from Aspergillus aculeatus. 1 and 2 represent the first examples with a 6/6/3-tricyclic scaffold and the biomimetic formation of 1 was achieved starting from 3.
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Visible-light Induced [1, 3]-Brook Rearrangements of α-Ketoacylsilanes and Its Subsequent Trapping in a Tandem Annulation with 1, 3, 5-Triazinanes and Azomethine Imines

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00463A, Research Article
Zhong Zhang, Sirui Wu, Yuqiao Zhou, Bao-Lin Li, Siyue Xiao, Xiaohu Zhao, Zhipeng Yu
An unusual visible light-induced [1, 3]-Brook rearrangement of α-ketoacylsilanes for cascade cyclization with 1,3,5-triazinanes and C,N-cyclic azomethine imines has been developed under catalyst-free and mild reaction conditions. The strategy offers...
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Cobalt-catalysed Csp3–Csp3 cross-coupling of benzyl Katritzky pyridinium salts with Callyl–O electrophiles

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00402G, Research Article
Mengyu Gao, Corinne Gosmini
Different allylbenzyl derivatives are synthesized by Co-catalyzed reductive cross-coupling from functionalized benzyl Katritzky pyridinium salts and various allylic acetates, ethers or carbonates in moderate to good yields under mild conditions.
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Metal-free photoinduced denitrogenative alkylation of vinyl azides with alkyl radicals toward ketones

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00280F, Research Article
Hui Yin, Siqi Jian, Xiujuan Feng, Ming Bao, Xuan Zhang
A metal-free method for the synthesis of ketones via a visible-light induced denitrogenative alkylation of vinyl azides with alkyl radicals is presented.
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Copper-catalyzed oxidative sulfenylation and alkylation of indolin-2-ones for direct construction of sulfur-substituted quaternary carbons

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00491D, Research Article
Yun-Hao Zhang, Yi-Nuo Wang, Zi-Yu Liu, Si-Han Zheng, Guang-Lin Li, Dexin Feng, Da-Zhen Xu
A rapid and green one-pot access to S-substituted quaternary carbon centers from commercially available feedstock chemicals has been established, providing complex molecules with high chemoselectivity by the use of air as the terminal oxidant.
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A retro-Mannich mediated transformation of Morita–Baylis–Hillman ketones to saturated imidazo[1,2-a]pyridines

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00352G, Research Article
Sachin Sharma, Ajit Kumar Jha, Srinivasan Easwar
Two fruits felled with one stone! – a proof of mechanism and a synthetic method that delivers a privileged heterocyclic motif.
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Development of a photoenzymatic one-pot hybrid system for the direct synthesis of 3,3-disubstituted indole-2-ketones from N-methyl indoles

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00371C, Research Article
Yao Yao, Yuan Yu, Ming-Liang Shi, Xin-Yue Fan, Ru-De Lin, Kun Li, Wen-Dian Li, Fei-Yan Tao, Na Wang
The effective combination of photocatalysis and enzyme catalysis has been widely utilized for the synthesis of high-value-added products.
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Fully atom-economic access to spiro-cyclic skeletons through photoredox-induced hydrogen transfer/Giese addition/dearomative cyclization/protonation cascade

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00317A, Research Article
Guohui Zeng, Hui Luo, Kai Jiang, Jianpeng Cai, Biaolin Yin
Amine-tethered spiro-cyclic skeletons were obtained through photo-induced 100%-atom-economic dearomatization, involving the cleavage of the α-C(sp3)–H of amines. Pentacyclic framework was achieved from pyridinyl ring within two steps.
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Photochemical [2 + 2 + 1] annulation of 2-vinyloxy arylalkynes with bromomalonates via energy transfer

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00249K, Research Article
Shuo Tang, Jiupeng Liu, Min Zhang, Dan Wang, Yong Wang, Jingjing Zhao, Pan Li
A transition-metal-free, oxidant-free and base-free photochemical [2 + 2 + 1] radical annulation of 2-vinyloxy arylalkynes with bromomalonates has been developed.
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Halogen-Bond-Promoted Direct Cross-Coupling of Ethyl 3-bromo-3-alkyl-2,2-difluoropropanoate with Coumarins/Quinolinones

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00484A, Research Article
Guoliang Pu, Shi-Yuan Song, Jian Yang, Peng Guo, Jia Jia, Peijun Liu, Xuefei Li, Ping Liu, Chun-Yang He
Herein, we developed a practical method for the direct cross-coupling of ethyl 3-bromo-3-alkyl-2,2-difluoropropanoate with coumarins/quinolinones, leveraging a halogen bond as the pivotal non-covalent interaction. Employing this protocol, a library of...
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Selective nickel-catalyzed disulfuration of alkyl halides with di/trithiosulfonates

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00411F, Research Article
Lulu Liu, Jiaqi Hou, Yingying Ma, Hongwei Wang, Yu Zhong, Fangcan Liang, Luyao Wang, Qingling Wang, Ji-Quan Liu, Wen-Hua Xu, Dianhu Zhu
Selective reductive disulfuration of alkyl halides with di/trithiosulfonate reagents was developed through ligand regulation, with key features of broad substrate scope, good tolerance and excellent selectivity to disulfides over trisulfides.
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Integrating continuous flow reaction and work-up: chiral amine resolution, separation and purification using a novel coalescing filter system

React. Chem. Eng., 2024, Accepted Manuscript
DOI: 10.1039/D4RE00442F, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Bethan May Rowley, Lisa Alice Thompson, Luke Power, James Daglish, Emma Parks, James Birbeck, Stephen P Marsden, Nikil Kapur, John Blacker
To maximize the benefits of a continuous flow reaction, a continuous work-up is also needed. Herein, we present a process design and novel equipment for a continuous amine resolution reaction,...
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A Hierarchical Surrogate Approach to Biomass Ethanolysis Reaction Kinetic Modelling

React. Chem. Eng., 2024, Accepted Manuscript
DOI: 10.1039/D4RE00378K, Paper
Ailís O'Shea, Conall McNamara, Prajwal Rao, Mícheál Séamus Howard, Mohammad Reza Ghaani, Stephen Dooley
The reaction mechanism and kinetics of the sulfuric acid catalysed ethanolysis of glucose, cellulose, xylan, and corncob was investigated using a combination of experiments and empirical reaction mechanism modelling. The...
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Efficient Fully Textured Perovskite Silicon Tandems with Thermally Evaporated Hole Transporting Materials

Energy Environ. Sci., 2024, Accepted Manuscript
DOI: 10.1039/D4EE03899A, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Bhushan Kore, Oussama Er-raji, Oliver Fischer, Adrian Callies, Oliver Schultz-Wittmann, Patricia Samia Cerian Schulze, Martin Bivour, Stefaan De Wolf, Stefan W Glunz, Juliane Borchert
Fully textured perovskite silicon tandem solar cells effectively minimize the reflection losses and are compatible with industrial silicon production lines. To facilitate scalability and industrial deployment of perovskite silicon tandems...
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Contribution of an instructional module incorporating PhET simulations to Rwandan students' knowledge of chemical reactions, acids, and bases through social interactions

Chem. Educ. Res. Pract., 2024, Advance Article
DOI: 10.1039/D4RP00105B, Paper
Jean-Baptiste Ndagijimana, Jeannette Musengimana, Henriette Mushimiyimana, Evode Mukama, Olivier Habimana, Paulin Manirakiza, Jean Claude Dushimimana, Jean Pierre Alpha Munyaruhengeri, Samia Khan, Elizabeth Lakin
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Farewell and thank you for the continued partnership, Francois Chollet!

Today, we're announcing that Francois Chollet, the creator of Keras and a leading figure in the AI world, is embarking on a new chapter in his career outside of Google.




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Germany opens doors to skilled Indians amid global visa cuts

The number of skilled Indian workers in Germany has increased to 1.3 lakh from 23,000 a decade ago




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Stocks that will see action today: November 14, 2024

Buzzing stocks: Tata Power, India Glycols, Hero MotoCorp, BDL, Firstcry, Mamaearth, MTNL, HAL, Nazara Tech, Sobha, Glenmark Pharma, GVK Power, Medi Assist, Grasim, PNB Housing Fin, Samhi Hotels, Inox Green Energy, Varun Beverages, Piccadilly Agro, 




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IIT Kharagpur-led study says tropical rainforests could survive global warming

The study, published online in the Elsevier journal, was conducted on records of rainforests in sediments from Gujarat’s Vastan coal mines deposited in coastal lagoons around 56 million years ago




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CPI(M) Kerala secretary M.V. Govindan backs E.P. Jayarajan amid autobiography controversy

Govindan says CPI(M) does not require members to seek prior permission to write a book, though he emphasised that consultation with the party should occur before publication




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Centre releases ₹266.8 crore under 15th Finance Commission grants for rural local bodies in Kerala

Allocation represents second instalment of untied grants for 2024-25, and is meant for all eligible district panchayats, block panchayats and gram panchayats in Kerala




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Panel to look into ‘disruption’ of Kerala School Sports & Games




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KFON to depend on Supplyco database to provide Internet connection to BPL families




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Kollam’s first Keralagro outlet inaugurated

Agricultural products reach Keralagro stores with FSSAI certification and currently over 3,000 value-added products are being manufactured through 10,76 Krishibhavans in the State




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Quiz competition on AI in Karunagapally




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KHTC looking to resume boating in Anayirankal dam

Agency, in an affidavit submitted in the Kerala High Court, outlines plans to make boating facility more eco-friendly




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Women’s Commission sitting held in Kollam




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Chelakkara records 72.77% turnout in bypoll




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PDA will defeat BJP in bypolls, says Akhilesh

Welcoming the Supreme Court’s direction on bulldozer ‘justice’, the SP chief says from now onwards, the bulldozer will remain parked in garage forever




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Rate cut unlikely even in February, inflation to dip January onwards: SBI research

The report adds that inflation is likely to average around 4.8 per cent to 4.9 per cent for financial year 2025, higher than the RBI target of 4.5 per cent




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Tata Power Renewable Energy unveils 126 MW Omkareshwar floating solar project, setting new global standards

With this project, TPREL’s total renewable capacity reaches 10.9 GW, reinforcing its position in India’s journey towards a greener energy future.




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Cambodia to deploy over 16,000 security forces for water festival this week