Articles tagged with Esters
Researchers at Okayama University develop a novel photochemical strategy for macrolactonization, transforming hydroxyaldehydes into large ring lactones. The method avoids harsh conditions and multi-step procedures, making it attractive for scaling up synthesis and improving cost-effectiveness.
Researchers at Nagoya University developed a catalyst system that converts alcohols to valuable chemical products at lower temperatures using safer iodine compounds. The new system eliminates toxic heavy metal waste, cuts reaction temperatures by over half, and reduces energy costs.
Researchers develop a novel method to simplify chemical modification of ketones and esters, unlocking their potential for faster and more sustainable chemical production. This breakthrough has implications for pharmaceutical innovation, materials science, agrochemicals, and everyday items.
A new NIH study found exposure to organophosphate esters (OPEs) during pregnancy may affect childhood obesity risk. Children exposed to higher levels of certain OPEs had a greater or lower risk of obesity compared to those with lower exposure.
Researchers at Hokkaido University discovered unique lipids in sorghum that have anti-diabetic and anti-inflammatory properties. The study suggests that incorporating sorghum into diets could promote cardiovascular health, reduce inflammation, and enhance metabolic health.
Researchers at Osaka Metropolitan University used CRISPR/Cas9 to create a strain of Euglena that produces wax esters with shorter carbon chains, improving their cold flow and suitability as a biofuel feedstock. This breakthrough could potentially replace petroleum-based production of wax esters with biological sources.
Researchers developed a one-pot process to transform aromatic ketones into esters, simplifying the reaction process, reducing reaction times, and minimizing purification steps. The method enables seven different chemical transformations and has shown notable stability and reusability, making it scalable for industrial applications.
Researchers developed a novel photocatalyst called N-BAP to reduce esters using sustainable light energy. The catalyst initiates a quadruple electron transfer process, enabling the reduction of esters to form alcohols without using metal reductants.
Researchers at Tokyo University of Science developed menthyl esters with potent anti-inflammatory and anti-obesity effects. The compounds outperformed menthol in inflammatory assays and suppressed genes involved in immune responses. They also inhibited adipogenesis, showing promise for addressing metabolic disorders.
Researchers from NUS have developed a method for creating enantioenriched boronic esters using chiral nickel catalysts, offering a new route to complex organic compounds. The approach enables simultaneous control of regioselectivity and enantioselectivity in carboboration reactions.
A recent NIH study found that exposure to organophosphate ester flame retardants during pregnancy may increase the risk of preterm birth, particularly in female infants. Higher concentrations of certain OPE markers were also associated with higher birth weights, which can be a sign of potential complications.
A new method has been developed to convert the widely used dry-cleaning solvent perc into carbonate esters and chloroform, valuable building blocks for further organic synthesis. This clean process uses on-demand UV activation, eliminating the need for toxic source materials.
A research team from Tokyo University of Science has developed a novel synthesis route to produce a wide variety of sulfinate esters using readily available compounds. The new method uses thioesters, which are odorless and stable, eliminating the challenges associated with handling thiols.
UC Santa Barbara researchers develop new catalytic process that can convert polyolefins from single-use plastics into valuable alkylaromatics, underlying surfactants in detergents. The improved method reduces production time and energy input, enabling potential commercialization and large-scale use.
Concentrations of potentially harmful chemical compounds in ISS dust exceed median values in US and Western European home floor dust. The study guides design and construction of future spacecraft by highlighting the importance of material choices.
Researchers have found a new target and drug combination that appears to stop the destruction of vision in premature newborns. By blocking ACAT1, an enzyme that converts cholesterol into smaller pieces, scientists can prevent the formation of leaky blood vessels and inflammation in the retina.
Researchers from Tokyo Metropolitan University have developed a new catalyst that converts plastic and biomass into organosilane compounds. The hybrid gold nanoparticle catalyst on zirconium oxide support enables mild conditions for the reaction, reducing environmental burden.
The São Paulo School of Advanced Science on Epidemic Preparedness will bring together researchers from various fields to discuss core tracks such as mathematical modeling, genomics, epidemiological surveillance, and public health policies. Participants will engage in simulated situation rooms and hands-on experience with leading faculty.
A new study found that gestational exposure to the flame retardant FM 550 resulted in altered brain development in newborn rats, with effects more pronounced in male offspring. The study also showed evidence of mitochondrial disruption and dysregulated choline and triglyceride levels in brain tissue.
Researchers found nearly 400 food samples tested positive for organophosphate esters (OPEs) from common flame retardants. Levels were below health risk thresholds but raised concerns about long-term exposure and contamination sources.
Studies investigate lifestyle interventions to achieve nutritional ketosis and its impact on chronic illness, sleep, and cardiovascular disease in the military. Researchers aim to understand how ketogenic diet, ketone-based beverages, and their effects on clinical outcomes will benefit soldiers' health.
Chemists at the University of Münster developed a novel method for synthesizing complex organic molecules using visible light. The method produces biologically valuable β-amino acids, including a bifunctional oxime oxalate ester with both amine and ester functionalities.
Recent research by scientists at Duke University has found that ordinary silicone wristbands can absorb semi-volatile organic compounds firefighters are exposed to while working, tracking their risk of cancer. The study reveals strong associations between active firefighting and exposure to certain contaminants.
A new study finds that flame-retardants and plasticizers are present in the oceans, harming marine organisms and potentially affecting human health. The substances, which are widely used in everyday products, can be transported from inland sources to coastal environments through air masses and ocean currents.
A team of researchers developed a novel method for producing optically active hydroxy β-lactam derivatives using baker's yeast and microwave irradiation. The process yielded 3:1 ratio of two hydroxyl compounds in 65% yield, with the resulting compounds showing high optical purity.
A zirconium oxide-supported platinum-molybdenum catalyst enables the selective conversion of esters into valuable unsymmetrical ethers under mild conditions. This process offers a sustainable solution for producing these compounds from renewable biomass-derived materials, reducing waste and energy consumption.
Researchers developed a computer model of lipoprotein-associated phospholipase A2, shedding light on its mechanism and substrate specificity. This knowledge creates opportunities for therapeutic interventions against cardiovascular disease.
A study found that water dispensers could be a source of organophosphate ester exposure, with OPEs detected in the majority of samples. The researchers estimated daily consumption levels to be below health-risk thresholds, but highlighted the need for future research on suitable tubing materials.
Researchers have developed a biodegradable polymer coating that can block grease and oil in compostable paper packaging, reducing environmental impact. The coating's ester linkages break apart in water, allowing microorganisms to degrade it.
A team of chemists from Waseda University in Japan has synthesized aryl sulfides without using thiols, a toxic and smelly compound. The new method uses a nickel catalyst and environmentally friendly aromatic esters as feedstock, showing promise for both laboratory and industrial-scale applications.
Researchers at Nagoya University have found catalysts that improve an important industrial reaction, producing high yields of a compound used in various industries without toxic compounds or high temperatures. The approach offers a practical and sustainable solution for industrial (meth)acrylate ester synthesis.
A team of researchers has successfully developed sulfur-containing liquid crystal molecules with oppositely directed ester bonds, exhibiting a twist-bend nematic phase over a wide temperature range. The study reveals that the ester bond direction significantly impacts the helical pitch lengths in the phase.
Researchers at Waseda University develop a novel palladium catalyst called dcypt to enable efficient synthesis of aromatic esters. The 'ester dance reaction' can be combined with other reactions to produce compounds with diverse substitution patterns, making it a cost-efficient process.
Researchers assembled jojoba genome into 26 chromosomes with 23,490 protein-coding genes, revealing evolutionary history and agronomic properties. The plant's ability to store wax in its seeds makes it a promising source of sustainable liquid wax esters for pharmacy, cosmetics, and hair care products.
A new UC Riverside study reveals that commuters exposed to a known carcinogen called TDCIPP for less than a week experience elevated levels of the chemical. The research found that the longer one commutes, the higher their exposure to TDCIPP.
Researchers developed a method to retain boron units during C-C couplings, expanding the range of industrial boron compounds. The new process enables sequential incorporation of building blocks and potential future use in pharmaceutical production.
Researchers have demonstrated a ternary organic solar cell with a power conversion efficiency of 14.3%, beating the typical drop in fill factor upon increasing the thickness of the active layer. The addition of PC61BM improves hole and electron mobilities, facilitating charge transport and leading to improved efficiencies.
Researchers have identified potentially less toxic and biodegradable flame retardants from plants, which could replace hazardous organohalogen compounds. The new substances, derived from gallic acid and 3,5-dihydroxybenzoic acid, perform as well as many existing flame retardants on the market.
Researchers at the University of Toronto discovered that cell phone levels of toxic chemicals correlate with those on hands and in urine, suggesting handheld devices as time-integrated samplers for chemical exposure. The study highlights the need to reduce use of handheld devices, especially by children.
A project analyzing telecommunication patents found an exponential increase in patents and fragmentation hindering lawsuit progress. Experts recommend unifying courts, limiting lawsuits, improving training on property rights, and enhancing visibility for small and medium-sized companies.
The study used LC-HRMS/MS to identify two main metabolites of Nitroproston in rat plasma: 1,3-GDN and PGE2. In human whole blood, Nitroproston biodegradation rate was the slowest, occurring more rapidly in whole blood. This suggests that metabolism is mainly associated with RBC fractions.
A team at Nagoya University developed a metal-free catalyst, tetramethylammonium methyl carbonate (TMC), that expands the substrate range of trans-esterification. TMC reacts with alcohols to form alkoxide ions, which attack esters to produce complex target esters in high yields.
A new additive consisting of oxygenated organic compounds has been developed to reduce the release of pollutants during the combustion of fossil fuels. The researchers' study found that diethyl carbonate can facilitate clean combustion of diesel fuels, reducing soot production and environmental damage.
Researchers at Waseda University developed a novel method to produce ethers by removing carbon monoxide from aromatic esters using palladium or nickel catalysts. This innovation enables the production of diaryl ethers from over 30 different kinds of aromatic esters, offering a more inexpensive and easily obtainable alternative.
Researchers found that adding a ketone ester to a rat's diet increased treadmill run times and maze-solving speed, as well as energy production in the heart. The study suggests that ketone esters may hold benefits for people with debilitating metabolic and neurological diseases.
Two researchers have discovered a single-step chemical process that creates both alcohols and esters without generating any waste or using harmful reagents. The process is more straightforward and simpler than existing methods, offering an economical and sustainable alternative for industrial applications.
A new study suggests that a powdered food supplement, based on a molecule produced by bacteria in the gut, can reduce cravings for high-calorie foods like chocolate and pizza. The supplement, called inulin-propionate ester, releases more propionate than other fiber supplements, which signals to the brain to reduce appetite.
A recent study found that testosterone therapy improved erectile function and intercourse satisfaction in men with severe hypogonadism, a condition often associated with type 2 diabetes. The study suggests that trials of testosterone therapy should last at least 6 months for optimal results.
Researchers at Toyohashi Tech have successfully demonstrated the enantioselective phenoxylation of β-keto esters, allowing for the synthesis of α-aryloxy-β-keto esters with high enantioselectivity. This method enables the creation of biologically active compounds for potential treatment of type 2 diabetes.
Researchers at Georgia Institute of Technology find that mixing amino and hydroxy acids with wet-dry cycles can create polypeptides, key components of life. The process, which could have occurred in a drying puddle, supports the theory that life began on dry land.
Researchers at ITbM have developed a novel, relatively inexpensive synthetic strategy using nickel catalyst to form useful compounds. Esters have been identified as a clean coupling partner for the carbon-carbon bond forming cross-coupling reaction.
Researchers found that plants produce special molecules called sinapate esters to protect themselves from harsh ultraviolet-B radiation. These molecules appear to block UVB radiation from penetrating deeper into leaves, hindering plant growth. The study provides insight into the mechanics of how these natural plant sunscreens work.
Researchers at the University of California - Davis have engineered bacteria to produce esters, a key component in scents, flavors, and chemical processes. This breakthrough could lead to a $20 billion industry shift towards renewable sources.
Researchers have found a link between prostate cancer aggressiveness and cholesteryl ester accumulation, suggesting new diagnostic and treatment methods. The study also shows that drugs previously developed to treat atherosclerosis might be repurposed for advanced prostate cancer treatment.
Scientists have identified several natural ingredients with potential health benefits, including curcumin, which inhibits cancer cell growth and induces apoptosis. Other compounds found in ginger, cranberries, and olive oil also show promise in reducing the risk of heart disease and cancer.
A new process developed by UC Davis chemists increases biodiesel yields from oilseed crops like safflower by up to 24%. The method converts both plant oils and carbohydrates into a fuel cocktail that performs better at low temperatures.
The US Environmental Protection Agency announced the 2009 Presidential Green Chemistry Challenge Award winners, recognizing research that can make significant contributions to pollution prevention. The award winners developed innovative methods for producing greener chemicals, fuels, and materials.
Researchers identify volatile compounds, including terpenoids and fatty acids, as a powerful attractant for nutria. These compounds can serve as a tool in controlling the spread of nutria in coastal ecospheres, offering an environmentally friendly bait technique.
A study by Richard E. Morton and Lahoucine Izem found that the protein cholesteryl ester transfer protein (CETP) plays a crucial role in fat cell storage and regulation, potentially leading to improved understanding of obesity and diabetes.
Researchers discover hemoglobin's novel function as a nitrite reductase, generating nitric oxide to regulate vasodilation. Separate studies reveal that M cells are not necessary for oral tolerance induction, while bacterial infections can break B cell tolerance by activating self-reactive B cells.