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Vaska's complex–PMHS combination enabled mild and chemoselective reduction of sulfoxides to sulfides with low catalyst loading

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00312H, Research Article
Fang-Fang Xu, Zhong-Lei Ruan, Pei-Qiang Huang
We report a highly efficient, versatile, and chemoselective method for the catalytic reduction of sulfoxides to sulfides under mild conditions.
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Electrochemically dehydrogenative C(sp2)–H/S–H cross-coupling: efficient synthesis of ortho-aminophenyl thioglycoside derivatives

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00171K, Research Article
Li-Yan Hu, Li Zhu, Shen-Yuan Zhang, Yu-Xin Guo, Yuan Li, Jie Zhu, Lei Wu
A method has been reported for synthesizing aryl thioglycosides through direct electrocatalytic dehydrogenative C(sp2)–H/S–H cross-coupling.
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Iodine-catalyzed intermolecular 1,2-thio (seleno)amination of alkenes with 1,2,3-triazoles and disulfides (diselenides) in air

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00246F, Research Article
Jian Ji, Xuwen Chen, Zongjing Hu, Cong Guan, Jinhua Liu, Yaqi Deng, Shunying Liu
Iodine-catalyzed 1,2-thio (seleno)amination of alkenes via direct N- and C-centered radical cross-coupling was established to elicit highly regioselective β-triazolized thioalkyl compounds.
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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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Deoxygenation of N-heterocyclic N-oxides using isopropanol as a recyclable reductant

Org. Chem. Front., 2024, 11,2249-2268
DOI: 10.1039/D4QO00208C, Research Article
Ho Kyeong Ryu, Yun Do Song, Jun Hee Lee
An organic photoredox-based recyclable strategy that facilitates the chemoselective deoxygenation of various functionalised N-heterocyclic N-oxides is presented.
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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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Selective photochemical synthesis of primary arylamines and symmetric diarylamines via amination of aryl bromides using Ni(NH3)6Cl2 as a nitrogen source and catalyst

Org. Chem. Front., 2024, 11,2313-2318
DOI: 10.1039/D4QO00116H, Research Article
Zhehui Xu, Jianyang Dong, Geyang Song, Fuqiang Kong, Gang Li, Dong Xue
The selective synthesis of primary arylamines and diarylamines via coupling reactions with ammonia as a nitrogen source is still challenging.
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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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Regioselective electrochemical cascade C–H sulfonylation–bromination of indolizines to access difunctionalized indolizines

Org. Chem. Front., 2024, 11,2306-2312
DOI: 10.1039/D4QO00035H, Research Article
Wenxuan Jiang, Xiang Liu, Chuanying Zhu, Meiyi Chen, Weidan Li, Hua Cao
Regioselective electrochemical C–H sulfonylation–bromination between indolizines, sodium sulfinates, and KBr has been established in an undivided cell, in which KBr serves as both the brominating agent and electrolyte.
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Electrochemical remote C(sp3)–H thiocyanation

Org. Chem. Front., 2024, 11,2283-2288
DOI: 10.1039/D4QO00032C, Research Article
Xinyu Pang, Hui He, Xiangrui Meng, Linbao Zhang, Shaofei Ni, Ming Li, Weisi Guo
An electrochemical thiocyanation of distal C(sp3)–H bonds based on amidyl radical-mediated 1,5-HAT has been developed. The transformation is highly site-selective and compatible with primary, secondary, and tertiary sulfonamides, and bioactive derivatives.
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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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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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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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Expedient deaminative phosphorylation and sulfonylation of benzylic tertiary amines enabled by difluorocarbene

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00412D, Research Article
Chengbo Li, Yu Guo, Jianke Su, Xinyuan Hu, Qingqing Xuan, Qiuling Song
A deaminative functionalization of aliphatic tertiary amines via the cleavage of C(sp3)–N bonds under transition metal-free conditions was disclosed, which goes through SN2 reaction with various phosphorus and sulfur nucleophiles.
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Iridium-catalyzed asymmetric hydrogenation of 5-hydroxypicolinate pyridinium salts under batch and flow: stereodefined access to cis-configurated hydroxypiperidine esters

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00322E, Research Article
Zhi Yang, Shangxian Luan, Linxi Wan, Jingxi Chen, Xiaofang Wei, Pei Tang, Fen-Er Chen
An iridium-catalyzed asymmetric hydrogenation of 2-esteryl-5-hydroxypyridinium salts is reported, providing chiral cis-5-hydroxypiperidine-2-carboxylates in excellent yields with high levels of enantioselectivities and diastereoselectivities.
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S.Korea, US-developed solar coronagraph installed at International Space Station




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Rahul Gandhi's video promoting Wayanad as tourist destination goes viral




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‘Unfortunate that Congress failed to rein in its rebel candidates…effect could be felt in 7-8 seats’: NCP leader Jayant Patil




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Rejuvenating manganese-based rechargeable batteries: fundamentals, status and promise

J. Mater. Chem. A, 2024, 12,8617-8639
DOI: 10.1039/D4TA00466C, Review Article
Weizhai Bao, Hao Shen, Yangyang Zhang, Chengfei Qian, Dingyu Cui, Jingjie Xia, He Liu, Cong Guo, Feng Yu, Jingfa Li, Kaiwen Sun
Energy storage devices with advanced rechargeable batteries are highly demanded by our modern society.
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Photothermal conversion enabled temperature modulation for the growth of complex polymorphic architectures of calcium carbonate

J. Mater. Chem. A, 2024, Accepted Manuscript
DOI: 10.1039/D4TA00802B, Paper
Boning Shi, Lifu Zhang, Zeda Yang, Jiangnan Deng, Shun An, Benwei Fu, Chengyi Song, Peng Tao, Tao Deng, Wen Shang
As a highly efficient and eco-friendly heat generation approach, photothermal conversion process has been applied to many important areas such as desalination and medical treatments. We explored in this work...
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Metal–support interaction triggered d–p orbital hybridization for efficient electrocatalytic semi-hydrogenation of alkynes

J. Mater. Chem. A, 2024, Advance Article
DOI: 10.1039/D4TA01240B, Paper
Qiong Wan, Jiaxun Zhang, Xuan Liu, Huizhi Li, Abdullah, Taotao Ren, Qiyuan Liu, Yongheng Xu, Jia Liu, Jicheng Liu, Bingqing Yao, Yiyun Fang, Xinzhe Li, Chi He
Atomic restructuring in Pd/Fe2O3 catalysts weakens Pd binding to chemisorbed 4-aminophenylacetylene and hydrogen intermediates, boosting conversion and selectivity in 4-aminophenylacetylene semi-hydrogenation, surpassing Pd/C and other catalysts.
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Enhanced Hydrogen Production by Assisted Biomass Gasification Using Lithium Manganate as Bifunctional Material

J. Mater. Chem. A, 2024, Accepted Manuscript
DOI: 10.1039/D4TA00224E, Paper
Open Access
Carlos Hernández-Fontes, Nan Wang, Nayeli Gómez-Garduño, Heriberto Pfeiffer
The rising energy demand, among other economic and technological factors, increases the greenhouse gas emissions. Therefore, it is crucial to develop technologies to produce clean energy, such as hydrogen (H2)...
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Highly selective and high-performance sulfonated poly(ether ether ketone)-based hybrid membrane enabled by complexed UiO-66-NH2 and sulfonated graphitic carbon nitride for vanadium flow battery

J. Mater. Chem. A, 2024, Accepted Manuscript
DOI: 10.1039/D4TA00988F, Paper
Caiyuan Zhao, Haixia Wang, Lang Li, Liping Liu, Xinrui Cui, Haifeng Shi
A series of sulfonated poly(ether ether ketone) (SPEEK) hybrid membranes (SPEEK/NF) with a constant 1 wt% complexed nanofillers (NF) comprising of UiO-66-NH2 and sulfonated graphitic carbon nitride (s-g-C3N4) are prepared...
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The fluorescence distinction of chiral enantiomers: a Zn coordination polymer sensor for the detection of cinchonine and cinchonidine

J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC03506B, Paper
Wenping Hu, Nan Wu, Dechao Li, Yefang Yang, Shaowen Qie, Shuai Su, Ruijie Xu, Wenting Li, Ming Hu
A Zn coordination polymer was constructed to identify chiral cinchonine and cinchonidine with high sensitivity, selectivity, and reproducibility.
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ED arrests four, including two Bangladeshi nationals, in human trafficking case




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Phase transition induced hydrogen activation for enhanced furfural reductive amination over CoCu bimetallic catalyst

Chem. Sci., 2024, Accepted Manuscript
DOI: 10.1039/D4SC05885B, Edge Article
Open Access
Yilin Wei, Zixu Ma, Beibei Liu, Jialin Yang, Dan Wu, Yongsheng Zhang, Yuexing Zhang, Charles Chunbao Xu, Renfeng Nie
The synthesis of primary amines from renewable biomass and its derivatives through reductive amination has garnered significant attention. How to construct efficient non-noble-metal catalysts that enable low-temperature catalysis still remains...
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Synthesis of highly condensed phospholes by Lewis acid-assisted dehydrogenative Mallory reaction under visible light irradiation

Chem. Sci., 2024, Accepted Manuscript
DOI: 10.1039/D4SC05657D, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Ikki Kamiyoshi, Yuki Kojima, Shibo Xu, Kosuke Yasui, Yuji Nishii, Koji Hirano
A photo-promoted oxidative cyclization, that is, Mallory reaction of 2,3-diarylbenzophopholes has been developed. With an assistance of Bi(OTf)3 Lewis acid, the reaction proceeds smoothly under visible light irradiation even without...
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Assam: Army celebrates 'National Education Day' with students in Tinsukia




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Rajnath Singh stresses on adaptive defence to cope with Age of Grey Zone, hybrid warfare




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‘Anti-war’ comedy play riles Bulgarian nationalists

Last week’s premiere of Arms and the Man by renowned Irish-born playwright George Bernard Shaw sparked raucous protests by nationalist groups




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Pyridinyl 4-(2-oxoalkylimidazolidin-1-yl)benzenesulfonates and their hydrochloride salts as novel water soluble antimitotic prodrugs bioactivated by cytochrome P450 1A1 in breast cancer cells

RSC Med. Chem., 2024, 15,3728-3745
DOI: 10.1039/D4MD00476K, Research Article
Vincent Ouellette, Chahrazed Bouzriba, Atziri Corin Chavez Alvarez, Quentin Bruxelles, Geneviève Hamel-Côté, Sébastien Fortin
New water soluble antimitotic CYP1A1-activated prodrugs named PYRAIB-SOs and their hydrochlorides targeting breast cancers.
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Prediction of synergistic gemcitabine-based combination treatment through a novel tumor stemness biomarker NANOG in pancreatic cancer

RSC Med. Chem., 2024, 15,3853-3861
DOI: 10.1039/D4MD00165F, Research Article
Jiongjia Cheng, Ting Zhu, Shaoxian Liu, Jiayu Zhou, Xiaofeng Wang, Guangxiang Liu
The synergistic effect observed in gemcitabine-based combination therapies targeting pancreatic cancer stem cells was correlated with the inhibiting effect on the expression of stemness-related gene NANOG.
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Novel PROTAC probes targeting KDM3 degradation to eliminate colorectal cancer stem cells through inhibition of Wnt/β-catenin signaling

RSC Med. Chem., 2024, 15,3746-3758
DOI: 10.1039/D4MD00122B, Research Article
Open Access
Shadid U. Zaman, Piyusha P. Pagare, Hongguang Ma, Rosalie G. Hoyle, Yan Zhang, Jiong Li
We designed and synthesized novel IOX1-based PROTACs, which can selectively degrade KDM3A and KDM3B to eliminate colorectal cancer stem cells through inhibition of Wnt signaling.
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Delhi AQI drops to 361 in ‘very poor’ category as smog engulfs national capital

Delhi recorded its first dense fog of the season on Wednesday as visibility dropped to 0 metres at 8 a.m.




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Developed nations need to triple their contribution to make climate finance credible: Avinash Persaud

Currently, developed nations are expected to pay $100 billion a year but they haven’t stuck to agreed targets, and this system ends next year.




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SKDRDP provides desks and benches worth ₹2.75 crore to 507 government primary schools in four districts of Karnataka

Rajya Sabha MP Veerendra Heggade urges parents to get their wards admitted to government schools as they now have better facilities




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Andhra Pradesh government deploys drones to detect ganja palnatations

State collaborates with NCB and Google to map and track cannabis plantations using satellite imagery technology




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Karnataka bypolls: Channapatna, Shiggaon and Sandur constituencies witness overall turnout of 76.9% till 5 p.m.

A total of 45 candidates are in the fray in these byelections




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Karnataka Chief Minister Siddaramaiah says no proposal to ease night traffic ban through Bandipur

Deputy Chief Minister D.K. Shivakumar had stated, in Wayanad in Kerala, that the government would take all possible measures to lift night traffic ban through Bandipur, which had riled wildlife conservationists in Karnataka




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Karnataka High Court dismisses Union Bank of India’s petition seeking transfer of Valmiki corporation case to CBI

‘Banking Regulations Act does not empower banks to seek transfer of probe into criminal cases registered by States to agency of its choice’




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Karnataka bypolls: A few residents of Savanur boycott polling in Shiggaon Assembly constituency

Some families at Dandinpet in Savanur boycotted the bypolls over not being given record of occupancy rights to them.




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KEA opposes fee reduction for recruitment examinations in Karnataka

Points out that the government does not provide any grant for conducting recruitment examinations




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Here are the big stories from Karnataka today

Welcome to the Karnataka Today newsletter, your guide from The Hindu on the major news stories to follow today. Curated and written by Nalme Nachiyar.




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Illegal export of iron ore from Belekeri port: Karnataka High Court suspends sentence and grants bail to MLA Satish Sail and five other convicts




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Union and State governments should set up Sanatana Board, demand seers




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Kannada has survived because of native speakers from North Karnataka: Horatti




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Karnataka to roll out e-khatas for all properties in GPs, ULBs to avoid fictitious transactions




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The perfect cocktail of layered discrimination

Under the existing formulation of delimitation, there is a grave risk of some ‘unsuccessful’ States becoming the ‘owners of an imperial centre’, imperilling ‘successful’ States




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Congress has led Karnataka to bankruptcy, alleges Tejasvi Surya in Mumbai

Under the Congress regime, Karnataka is facing extreme financial crisis; the government has been struggling to manage the State’s economy due to its mismanagement of funds, says the BJP MP