Organic Reactions
Articles tagged with Organic Reactions
Rapid synthesis of conductive organic compounds using mechanochemistry
Researchers from Nagoya University developed a two-step synthetic method for dihydrodinapthopentalenes, conductive organic molecules with complex synthesis. The new mechanochemical method synthesizes DHDPs in 15 minutes with minimal solvent waste and structural constraints.
Conquering the final frontiers in nanographene synthetic methodologies
Researchers have developed a new methodology for selective molecular transformations of polycyclic aromatic hydrocarbons (PAHs), targeting the challenging L-region. This enables the creation of larger PAH structures and new nanographenes, increasing versatility in technological applications.
Catalyst design enables efficient biomass upgrading under ambient conditions
Researchers developed a platinum-based catalyst supported on oxygen-vacancy-rich cerium oxide (Pt/CeO2–Vo) to enhance hydrogen activation. The catalyst achieved a pyrrolidone yield of 95.2% within one hour, with high formation rates and excellent stability.
Limonene enables highly efficient asymmetric synthesis via the mitsunobu reaction
Researchers discovered that limonene can be used as a reaction solvent for the Mitsunobu reaction, allowing efficient separation and purification. This characteristic promotes high reaction efficiency and simplified purification, making it an attractive alternative to traditional methods.
AI helps scientists design smarter biochar to remove antibiotics from water
Researchers developed an AI tool to predict how effectively biochar materials break down antibiotics, offering a faster and smarter way to design environmental cleanup technologies. The framework accurately estimates reaction rates and provides scientific insights into material characteristics that influence performance.
Team reports α-allylation of simple ketones and allyl alcohols on mesoporous silica
The team successfully developed a multifunctional catalyst incorporating palladium and copper complexes on mesoporous silica, enabling the efficient activation of ketones and allyl alcohols. This process accelerates the allylation reaction by up to a factor of 15.5 compared to previous catalysts.
New biochar design enables stable and long-lasting oxygen release for environmental applications
Researchers developed a new type of engineered biochar that can deliver oxygen in a controlled and stable way, overcoming limitations of current materials. The phosphate-modified biochar demonstrated strong environmental adaptability, making it suitable for complex natural environments.
Carefully controlled atoms make renewables more viable for plastics and fuels production
A new catalyst developed by Washington State University researchers efficiently converts abundant renewable ethanol into valuable molecules needed for production of plastics, fuels, and everyday products. The advance could someday make it easier to use renewables rather than petrochemicals to make common products.
Researchers develop biochar-based photocatalyst that rapidly removes antibiotic pollutants from water
A new biochar-enhanced photocatalyst has been developed to efficiently degrade antibiotic contaminants in water, with the material demonstrating remarkable ability to break down sulfadiazine. The photocatalyst harnesses sunlight to drive chemical reactions capable of degrading antibiotic molecules, and its performance is substantially ...
AI tool streamlines drug synthesis
Researchers developed a machine-learning system that predicts how molecules form, cutting lab work time from months to days and reducing costs. The system uses asymmetric cross-coupling reactions to build complex compounds and can be applied across fields, deepening our understanding of chemistry.
Engineering a low-cost alternative catalyst for producing sustainable petrochemicals
Researchers at the University of Rochester have developed a new way to harness the properties of tungsten carbide as a catalyst for producing valuable chemicals and fuels. The method, which involves carefully manipulating tungsten carbide particles at the nanoscale level, has shown promising results in reducing costs and increasing eff...
New molecular design strategy improves efficiency and selectivity in electrocatalytic reactions
Researchers at YOKOHAMA National University have designed a new class of mediators that more actively control electrocatalysis reactions, promoting efficient C-N bond formation. The mediators utilize redox-triggered halogen bonding to dynamically capture and organize substrates, leading to improved reaction efficiency and selectivity.
Hidden catalysis: Abrasion transforms common chemistry equipment into reagents
A study from OIST shows that abrasion from common additives can lead to efficient reactions under mechanochemical conditions. Abrasive materials like tungsten carbide or diamond powder activate catalysts and drive coupling reactions. This finding changes the way researchers think about mechanochemical catalysts.
Chemists at Paderborn University discover new way of breaking down climate-damaging ‘laughing gas’
Researchers have successfully reduced ozone-damaging nitrous oxide to harmless nitrogen using a new phosphetane-oxygen catalyst, creating a potential solution for reducing greenhouse gas emissions. The process can be repeatedly reused, offering grounds for hope in combating climate change.
Cassini proves complex chemistry in Enceladus ocean
Scientists have found new complex organic molecules spewing from Saturn's moon Enceladus, confirming that complex chemical reactions are taking place within its underground ocean. The discovery strengthens the case for a dedicated European Space Agency (ESA) mission to orbit and land on Enceladus.
Robots map chemical reaction “hyperspaces” to unlock complex networks
Researchers at CARS create detailed maps of chemical reactivity, discovering regions of unexpected outcomes and reconstructing intricate reaction networks. This new understanding enables control over the formation of different major products from a set of starting materials.
New UMaine research could help lower prescription drug costs
Researchers at the University of Maine Forest Bioproducts Research Institute have discovered a sustainable method to produce (S)-3-hydroxy-γ-butyrolactone, a crucial building block in pharmaceuticals. This approach could significantly reduce greenhouse gas emissions and production costs by up to 60%.
Researchers uncover potential biosignatures on Mars
A new study has revealed chemical signatures of ancient Martian microbial life in the Bright Angel formation, a region of Jezero Crater known for its fine-grained mudstones rich in oxidized iron and organic carbon. The findings suggest that early microorganisms may have played a role in shaping these rocks through redox reactions.
Upcycling proteins just got easier
Researchers at Harvard SEAS have developed a gentler, more sustainable way to break down keratins and turn leftover wool and feathers into useful products. The process uses concentrated lithium bromide to create an environment favorable for spontaneous protein unfolding.
New catalysis method can generate a library of novel molecules for drug discovery
Researchers have developed a new catalysis method that can generate a diverse array of valuable compounds, including six distinct molecular scaffolds, using reprogrammed biocatalysts and sunlight-harvesting catalysts. The method opens up new possibilities for medicinal chemistry and accelerates combinatorial synthesis of novel molecules.
New methods expand access to molecules key to human health
A new approach to the Chan-Evans-Lam reaction enables the synthesis of multiple natural products, including novel vinylic ethers. This breakthrough expands the potential for complex, biologically active compounds in drug research.
Scientists reveal how microbes collaborate to consume potent greenhouse gas
Researchers discovered a unique partnership between two microbes that work together as a living electrical network to consume methane, a potent greenhouse gas. The finding sheds light on how microorganisms naturally reduce methane emissions and could lead to innovative strategies to control methane release in various environments.
One catalyst, two reactions: Toward more efficient chemical synthesis
Researchers develop redox-adaptive auto-tandem catalysis using cerium to perform multiple reaction steps in a single container. This method reduces overhead and energy requirements, leading to lower costs and reduced chemical waste.
Template-guided chemistry: breakthrough for molecular cage design
Researchers develop efficient template-guided method for synthesizing endo-functionalized oligophenylene cages with yields up to 68%. The approach enables precise control over internal environments, leading to selective molecular encapsulation and recognition capabilities.
New chemical tool may improve development of key drug components
Researchers at Ohio State University have developed a novel method to generate metal carbenes, highly useful for drug synthesis and materials development. The new approach is 100 times better than previous methods, making it easier and safer to produce these short-lived carbon atoms.
Team discovers electrochemical method for highly selective single-carbon insertion in aromatic rings
A team at Yokohama National University has developed an electrochemical method for highly selective single-carbon insertion into polysubstituted pyrroles, enabling the creation of structurally diverse pyridine derivatives. This approach has significant implications for synthetic organic chemistry and pharmaceutical synthesis.
USC technology may reduce shipping emissions by half
A USC-developed shipboard system using limestone and seawater can remove up to half of carbon dioxide emitted from shipping vessels, cutting maritime CO2 emissions by 50%. The process mimics a natural chemical reaction in the ocean, where CO2 is absorbed into water pumped onboard and then neutralized through a bed of limestone.
A small reaction space has a big impact on polymer chemistry
Researchers at The University of Tokyo have developed a 'molecular flask' that modulates chemical reactions, allowing for the creation of specialized polymers in extremely small spaces. This breakthrough technology enables the production of complex materials with various applications, including optoelectronics and medicine.
New method to study catalysts could lead to better batteries
Scientists developed an algorithm that can accurately simulate atomic interactions on material surfaces, reducing the need for massive computing power. This breakthrough enables the analysis of complex chemical processes in just two percent of unique configurations, paving the way for improved battery performance.
Paper outlines more efficient organic photoredox catalysis system inspired by photosynthesis
Researchers at Colorado State University have developed a more efficient light-based process for transforming fossil fuels into useful modern chemicals, effective even at room temperatures. The organic photoredox catalysis system uses visible light to alter chemical compounds, reducing energy demands and pollution in various industries.
A fresh new way to produce freshwater: sonicated carbon nanotube catalysts
Researchers at Tohoku University have developed a novel oxidation process using sonicated carbon nanotubes to remove industrial and municipal pollutants from contaminated water. The nonradical pathway achieves unprecedented removal rates within five minutes, targeting distributed water sources.
An iron oxide ‘oxygen sponge’ for efficient thermochemical hydrogen production
Researchers at Pohang University of Science & Technology have developed a novel iron-based catalyst that more than doubles the conversion efficiency of thermochemical green hydrogen production. The new catalyst, iron-poor nickel ferrite (Fe-poor NiFe2O4), enables significantly greater oxygen capacity even at lower temperatures.
New sensor could help prevent lithium-ion battery fires and explosions
Researchers have developed a new sensor to detect hazardous gas leaks in lithium-ion batteries, which could prevent catastrophic failures and enhance the reliability of battery-powered technologies. The sensor detects trace amounts of ethylene carbonate vapour, targeting potential battery failures before they escalate into disasters.
Mechanochemistry strikes again – A facile means for generating organolithium molecules
Mechanochemistry enables efficient generation of organolithium compounds, solving traditional synthesis challenges with simplified, solvent-free method. The new protocol achieves high conversion rates and reduces handling risks for technicians with limited experience.
A new way to detect inflammation
Researchers at Case Western Reserve University developed a method to detect inflammation using antibodies, potentially leading to blood tests for disease-specific biomarkers. The breakthrough also holds promise for drug discovery.
Structural color shields: water repellent coatings
Researchers developed a novel coating material that captures the brilliance of structural colors using melanin particles, producing non-iridescent color even when viewed from different angles. The coatings displayed a contact angle of over 160 degrees, monochromatic hues, and a self-cleaning surface.
A foray into the theory of mechanochemical reaction rates
A new theory predicts that a layer of mostly product at the interface determines the reaction rate in mechanochemical reactions. The force applied by the balls accelerates the reaction by reducing the thickness of the product-rich layer and inducing faster collisions between reactants.
A new method for efficient synthesis of anti-cancer drugs
Researchers at Tokyo University of Science have developed a new, highly selective and efficient method for synthesizing anti-cancer compounds. The innovative approach uses isopropyl magnesium bromide as a base to improve selectivity and scalability.
An efficient way to hydrogenate nitrogen-containing aromatic compounds has been developed
Researchers at Yokohama National University have developed an efficient way to hydrogenate nitrogen-containing aromatic compounds, reducing the industry's environmental footprint. The new method uses water and renewable electricity as energy sources, achieving high efficiency and scalability.
Novel green chemistry: A safe, low-cost, and eco-friendly conversion process for the synthesis of sulfonyl fluorides, a world first!
A research group from Osaka University has developed a novel green chemistry method to synthesize sulfonyl fluorides efficiently and with minimal environmental impact. This process uses easily accessible raw materials, thiols and disulfides, and produces only non-toxic sodium and potassium salts as byproducts.
New opportunities for organic synthesis under superheated flow conditions
Superheated flow technology leverages flow processes to operate above solvent boiling points, enhancing reaction rates and improving productivity and safety. This guide aims to facilitate the adoption of this innovative approach in organic synthesis.
Novel spectroscopy technique sheds light on NOx reduction
Lehigh University researchers developed a novel spectroscopy technique called modulation excitation spectroscopy (MES) to study selective catalytic reduction (SCR) of nitrogen oxides. The results, published in Nature Communications, reveal the correct reaction pathway and have significant implications for optimizing catalytic converters.
Towards non-toxic antifouling agents: A novel method for total synthesis of scabrolide F
Researchers at Okayama University developed a novel method for the total synthesis of scabrolide F, a natural marine compound. The study revealed that synthetic scabrolide F and its related compounds exhibited strong antifouling activity without toxicity, making it a potential solution to prevent biofouling damage.
Choosing outcomes: new switchable process for synthesizing 3-aminoindolines and 2’-aminoarylacetic acids from same substrate
Researchers at Okayama University developed a switchable process to synthesize 3-aminoindolines and 2'-aminoaryl acetic acids from a common substrate using Grignard reagents and azide compounds. The new protocol utilizes tautomerism to control chemoselectivity and achieves efficient synthesis with good yields.
Lanthanide catalysts enable one-step synthesis of complex drug precursors
Researchers have developed a novel technique using a new holmium catalyst for synthesizing hydrocarbazoles with tetrasubstituted carbon. The method uses a lanthanide-based catalyst and can be recycled, paving the way for sustainable chemical processes.
A simple, fast, and versatile method for selective bromination of indole alkaloids
A team of researchers from Chiba University has developed a novel one-step process for indole C5-selective bromination of MTIAs, achieving selective modification at the notoriously challenging indole C5 position. The method operates under mild reaction conditions and accommodates various functional groups.
Custom-made molecules designed to be invisible while absorbing near-infrared light
Researchers at Osaka University have developed systematically designed molecules that absorb near-infrared light but not visible light, paving the way for new applications in electronics. The new compounds show promise in areas such as solar cells, transistors, chemotherapy, and photodetectors.
Novel organic photoredox catalysts with enhanced stability and recyclability
A team of researchers from Okayama University developed a novel phenothiazine-based organic photoredox catalyst with enhanced stability and recyclability. The new catalyst, PTHS, features a spiral structure that provides improved stability and can be recycled multiple times without losing catalytic activity.
Chemistry researchers showcase new method to aid in pharma, agrochemical compound development
Researchers at Colorado State University have developed a new approach to speed up the development of pharmaceuticals and pesticides. By deconstructing and reassembling common compounds known as heterocycles, scientists can rapidly change their characteristics without extensive synthesis.
Bridging the gap: From frequent molecular changes to observable phenomena
A Japanese research team has developed a framework that accurately describes how first-order reactions appear depending on the time interval used to measure the reaction. The work uses a 'shutter speed' analogy to simplify complex molecular changes, allowing for precise predictions of reaction outcomes.
Researchers shed light on how key ingredient for life may form in space
A team of researchers from the University of Maryland has developed a novel way to produce and observe carbenes, a class of highly reactive molecules necessary for life. They successfully formed a carbene called hydroxymethylene (HCOH) by breaking down methanol with pulses of ultraviolet radiation.
Machine learning and AI aiding in the prediction of chemical reaction outcomes
Researchers at Yokohama National University utilized machine learning and AI to predict the selectivity of chemical reactions. By analyzing molecular factors such as sterics and orbitals, they developed a method to better understand reaction mechanisms, leading to more efficient synthesis of desired products.
Getting dirty to clean up the chemical industry’s environmental impact
Researchers discovered that adding water-resistant materials to an electrode can dramatically speed up chemical reactions in water, known as 'fouling'. This process can increase reaction rates up to six times faster than traditional methods. By leveraging this method, the chemical industry may be able to reduce its reliance on fossil f...
Computing takes the guesswork out of chemistry
A team of researchers from Osaka University used machine learning to identify a highly effective boron-based catalyst for chemical transformations of amino acids and peptides. The new catalyst generates only water as a coproduct and promotes high-yield reactions with minimal environmental impact. By leveraging computational methods, th...
Synthesizing π-extended carbohelicene-based circularly polarized luminescence emitters
Researchers at Tokyo Institute of Technology developed a new strategy to synthesize 3D π-extended carbohelicenes, overcoming molecular distortions and achieving CPL brightness of up to 513 M–1 cm–1. The study provides a solid groundwork for further research and development of high-performance carbohelicenes.
Breakthrough in benzofuran synthesis: New method enables complex molecule creation
A team of scientists at Tokyo University of Science has discovered a novel substituent migration reaction that enables the creation of complex benzofurans. This breakthrough synthesis method uses alkynyl sulfoxide and trifluoroacetic anhydride to produce highly functionalized benzofurans with high yields.
How scientists are accelerating chemistry discoveries with automation
A new statistical-modeling workflow can quickly identify molecular structures of products formed by chemical reactions, accelerating drug discovery and synthetic chemistry. The workflow also enables the analysis of unpurified reaction mixtures, reducing time spent on purification and characterization.
Fast folding for synthetic peptides and microproteins
Researchers at Xi'an Jiaotong-Liverpool University developed a new method that enables the efficient production of cysteine-rich peptides and microproteins in their naturally folded 3D structure. The approach uses organic solvents to mimic nature's oxidative folding process, resulting in speeds of over 100,000 times faster than aqueous...
Cheap substitute for expensive metal in an industrially common chemical reaction
Researchers from Osaka University developed an economical catalyst for a common chemical transformation, replacing rare metals with cheaper substitutes like nickel. The novel catalyst showed high activity, reusability, and high yields.