Current Aldehydes News and Events

Current Aldehydes News and Events, Aldehydes News Articles.
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RUDN University chemists developed a method to synthesize compounds for the pharmaceutics
A team of chemists from RUDN University suggested a universal method to synthesize thienoindolizine derivatives. Because of their special properties, these substances can be used to manufacture antibacterial and antitumor drugs, as well as new materials for optoelectronics. (2020-11-29)

NASA's Terra highlights aerosols from western fires in danger zone
The year 2020 will be remembered for being a very trying year and western wildfires have just added to the year's woes. (2020-09-10)

NOAA-NASA Suomi NPP captures fires and aerosols across America
On Sep. 07, 2020, NOAA/NASA's Suomi NPP satellite provided two different views of how fires are affecting the US. (2020-09-08)

Organocatalyst that controls radical reactions for complex and bulky compound synthesis
In catalytic reactions with organocatalysts, it is difficult to control radical reactions. We designed a thiazolium-type N-heterocyclic carbene catalyst having an N-neopentyl group. This catalyst was found to actively control radical reactions and enabled production of more than 35 species of bulky dialkyl ketones from an aliphatic aldehyde and an aliphatic carboxylic acid derivative through a radical relay mechanism. This catalyst is expected to open the way for acceleration of drug discovery research. (2020-08-11)

Difference in a single gene may boost stress on heart from e-cigarettes in people of East Asian descent
A genetic difference in one gene common in people of East Asian descent may make them more susceptible to rapid heart rates and chemical toxicity if they use e-cigarettes. Although e-cigarettes may have fewer chemicals than tobacco cigarettes, the chemicals in e-cigarette aerosol may still cause harmful effects, particularly in people who are more susceptible because of their genetics. (2020-07-27)

IKBFU and Chinese scientists invented a new way of creating meat analogs
In recent years, high-humidity extrusion technology has become widely used as it makes it possible to obtain a fibrous meat-like structure from vegetable proteins. (2020-04-20)

Male ring-tail lemurs exude fruity-smelling perfume from their wrists to attract mates
Humans aren't the only primates who like smelling nice for their dates. In the journal Current Biology on April 16, scientists report that male ring-tailed lemurs (Lemur catta) become more attractive to females by secreting a fruity and floral aroma from their wrists. Using detailed chemical analysis, the researchers identified three compounds responsible for this sweet scent, marking the first time that pheromones have been identified in a primate. (2020-04-16)

MOF co-catalyst allows selectivity of branched aldehydes of up to 90%
Heterogeneous catalysts are often preferred because of their robustness and lower operating costs, but homogenous catalysts still dominate when high selectivity is needed -- finding superior heterogeneous catalysts has been a challenge. Work from NCCR MARVEL shows how MOF micropores can enhance selectivity to levels that cannot be achieved with existing catalysts. The easy experimental protocol and MOF flexibility means the approach represents a powerful tool for designing selective catalytic heterogeneous processes in the fine chemical industry. (2020-02-26)

Novel biotechnological route developed to obtain fine chemicals from agricultural waste
Preliminary calculations show that the new biotechnological route can increase the value of sugarcane bagasse and wheat straw up to 5,000-fold and multiply the price of ferulic acid by a factor of up to 75 when these residues are converted into coniferol. (2020-02-13)

Brewing beer that tastes fresh longer
Unlike wine, which generally improves with time, beer does not age well. Usually within a year of bottling, the beverage starts to develop an unpleasant papery or cardboard-like flavor that drinkers describe as 'stale.' Now, researchers reporting in ACS' Journal of Agricultural and Food Chemistry have engineered lager yeast to make more molecules that protect beer against staling, resulting in improved flavor stability. (2019-12-04)

Vicinal reaction: A radical strategy for linking three organic groups together
A Japanese research team at Kanazawa University developed a reaction for creating functionalized ketones. Using an N-heterocyclic carbene (NHC) organocatalyst, with no need for metals or light irradiation, an acyl and an alkyl group are added across the double bond of an alkene. The NHC gives regioselective control over a relay process involving electron transfer followed by successive addition of two radicals onto the alkene. The diverse products are useful building blocks for further syntheses. (2019-10-31)

Analyses of newborn babies' head odors suggest importance in facilitating bonding
A team led by Kobe University Professor Mamiko Ozaki has become the first to identify the chemical makeup of the odors produced by newborn babies' heads. The results shed more light on the olfactory importance of newborns' heads in mother-baby and kin recognition. They also developed a non-invasive and stress-free method of sampling these odors directory from heads of the babies. Research into these odors can hopefully be utilized in the prevention of issues such as infant neglect and attachment disorders. (2019-09-27)

Exposure to second-hand e-cigarettes increasing among young people
A growing number of middle- and high-school students are being exposed to second-hand aerosols from e-cigarettes by living with or being around individuals who are vaping, according to data from a national survey. (2019-08-28)

Disappearing act: Device vanishes on command after military missions (video)
A polymer that self-destructs? Once a fictional idea, polymers now exist that are rugged enough to ferry packages or sensors into hostile territory and vaporize immediately upon a military mission's completion. The material has been made into a rigid-winged glider and a nylon-like parachute fabric. It could also be used someday in building materials or environmental sensors. The researchers will present their results today at the American Chemical Society Fall 2019 National Meeting & Exposition. (2019-08-26)

DGIST succeeded in materials synthesis for high efficiency in biological reaction
DGIST Professor Jaeheung Cho in the Department of Emerging Materials Science secured materials that lead aldehyde deformylation reaction. Confirmed the nucleophilic reactions by biomimetic materials... Expects to bring positive impacts on related research. (2019-08-19)

Black (nano)gold combat climate change
By using the techniques of nanotechnology, we transformed golden gold to black gold, by simply changing the size and gaps between gold nanoparticles. Now, like real trees, where they use CO2, sunlight and water to produce food, our developed black gold act like an artificial tree and use CO2, sunlight and water to produce fuel. Notably, black gold can also use to convert sea water into drinkable water using the heat that black gold generates after it is shined with sunlight. (2019-07-03)

Electric hookahs might be no safer than traditional charcoal-based ones
Waterpipe tobacco smoking, otherwise known as 'hookah' or 'shisha,' is becoming increasingly popular worldwide, especially among youth. Traditional hookahs burn charcoal as a heat source, but recently, electrical heating elements (EHEs) have been introduced to the market. Reinforced by product advertising and package labeling, many hookah smokers believe that EHEs are less harmful than charcoal. Now, researchers report in ACS' Chemical Research in Toxicology that although EHEs reduce some toxicants, they increase others. (2019-05-22)

Perfume makers seek natural, sustainable scents
In 1921, perfumer Ernest Beaux discovered that adding synthetic aldehydes to natural rose and jasmine scents produced just the right fragrance combination for the iconic CHANEL® No. 5 perfume. Today, perfume makers have more than 3,000 synthetic scent molecules in their palettes. However, according to an article in Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society, consumer demand for natural ingredients has challenged perfumers to find natural, yet sustainable, scents. (2019-04-24)

New mechanism of action found for agricultural pesticide fludioxonil
A fungicide commonly used by the agricultural industry to protect grains, fruit and vegetables from mold damage seems to kill fungi by a previously uncharacterized mechanism that delivers a metabolic shock to cells, new research at the University of Wisconsin-Madison finds. (2019-03-25)

Partners in catalysis: An efficient route to unsaturated ketones
A Japanese research team at Kanazawa University synthesized diverse β,γ-unsaturated ketones through direct reaction of aldehydes and allylic alcohols. An N-heterocyclic carbene acted as an umpolung catalyst, turning the normally electrophilic carbonyl carbon into a nucleophile. Another catalyst, based on phosphine-bound palladium, activated the alcohol. The catalytic synergy enabled both substrates to react without pre-activation, making the process cheaper and greener than traditional methods. (2019-02-25)

Optimized binding cavity
The impressively high conversion rates of natural enzymes partly result from increasing the catalytic activity of a selected few amino acid side chains through precise positioning within the protein binding cavity. Scientists have now demonstrated that such fine-tuning is also possible for 'designer' enzymes with unnatural catalytic amino acids. In the journal Angewandte Chemie, they report that laboratory 'evolution' of a designer enzyme with an aniline side chain led to variants with significantly higher activity. (2019-02-01)

New synthesis strategy for chiral drugs -- versatile chiral chemical species from aldehydes
We developed a new method of asymmetric synthesis for versatile chiral chemicals from aldehydes. A chiral hydroxycarbanion was formed from an aldehyde using a chiral copper?N-heterocyclic carbene catalyst and a palladium catalyst, which enabled subsequent synthetic processes to take place in one flask while maintaining enantioselectivity. Since many drugs exhibit chirality-dependent effectiveness, our new method should facilitate synthesis and development of pharmaceuticals and their precursors. (2019-01-09)

Dicationic ionic liquid & its application in the synthesis of xanthenediones
An efficient solvent-free method for the synthesis of xanthenediones has been developed in the presence of [(EtNH2)2SO][HSO4]2 as a powerful catalyst with high to excellent yields, and short reaction times. Additionally, recycling studies have demonstrated that the dicationic ionic liquid can be readily recovered and reused at least four times without significant loss of its catalytic activity. (2018-12-18)

A versatile method for the protection of carbonyl compounds by camphorsulfonic acid
In this paper, camphor sulfonic acid-catalysed protection of various carbonyl compounds is developed. This method is simple, environmentally friendly and yields products in high yields. (2018-12-05)

Marine algae bloom-derived biotoxins alter development of zooplankton and ocean food web
UB warns on climate change-related microalgal blooms affecting marine ecosystems (2018-10-24)

Adding flavors to e-cigarette liquids changes chemistry, creates irritants
New research from Duke and Yale universities shows added flavorings in e-cigarettes or vaping devices react to e-liquid, or e-juice, creating new compounds that could trigger irritation and inflammation when inhaled. (2018-10-18)

New method more than doubles sugar production from plants
EPFL chemists have developed a method that can significantly increase the yield of sugars from plants, improving the production of renewable fuels, chemicals, and materials. (2018-09-17)

Significant amount of cancer-causing chemicals stays in lungs during e-cigarette use
E-cigarettes have become increasingly popular as a smoke-free alternative to conventional tobacco cigarettes, but the health effects of 'vaping' on humans have been debated in the scientific and tobacco manufacturing communities. A recently published pilot study by a team of researchers from the Desert Research Institute (DRI) and the University of Nevada, Reno shows that significant amounts of cancer-causing chemicals such as formaldehyde are absorbed by the respiratory tract during a typical vaping session, underscoring the potential health risks posed by vaping. (2018-09-10)

Getting in Shape
They are especially good photocatalysts for the production of hydrogen by splitting water with solar energy: covalent organic frameworks based on triazines. For this application, the frameworks need to be in a nice regular crystalline form. In the journal Angewandte Chemie, scientists have now introduced a simple method for synthesizing crystalline covalent triazine frameworks. (2018-08-21)

Almost out of the air: an environmental friendly synthesis of betulin oxo-derivatives
TPU researchers develop completely new catalytic methods for synthesizing oxo-derivatives of betulin, which is an organic substance contained in the birch bark. In the age of green chemistry the cosmetic and food industries, especially the pharmaceutical industry are interested in the environment-friendly synthesis of these derivatives which function, for example, as building materials for many medicines. (2018-08-21)

Breath tests may allow for earlier detection of pancreatic cancer
Pancreatic cancer carries a very poor prognosis as most patients are diagnosed at an advanced stage. Now a new BJS (British Journal of Surgery) study indicates that breath analyses may help detect pancreatic cancer earlier, when curative treatments may be possible. (2018-07-18)

Compound in citrus oil could reduce dry mouth in head, neck cancer patients
A compound found in citrus oils could help alleviate dry mouth caused by radiation therapy in head and neck cancer patients, according to a new study by researchers at the Stanford University School of Medicine. (2018-05-21)

Children infected with malaria parasites produce odour more attractive to mosquitoes
Researchers smell opportunity for new malaria test and control methods after odour study carried out with Kenyan children. Finding is a major step forward in malaria research. (2018-04-16)

Mosquitoes reveal fatal attraction
Malaria causes the bodies of its human hosts to emit specific odors from the skin that make the hosts even more attractive to mosquitoes, which invites further bites and risks infection of more mosquitoes and wider transmission of the disease. It's a vicious circle but one that has enabled researchers to identify the odors as organic hydrocarbons whose discovery could bring relief to a disease that claimed nearly half a million lives in 2016. (2018-04-16)

E-cigarette vapor slows heart rate in mice
Electronic nicotine delivery systems (ENDS) such as e-cigarettes, affect heart rhythm and cardiovascular function in mice, according to preliminary research presented at the American Heart Association's Scientific Sessions 2017, a premier global exchange of the latest advances in cardiovascular science for researchers and clinicians. (2017-11-12)

RUDN chemists: A new compound will be used against tumors and Alzheimer's disease
Researchers from RUDN University conducted an effective three-component reaction, obtaining unusual organic compounds. The latter are structurally similar to a number of biologically active compounds -- which makes it possible to use them in pharmaceutics (for example, as anti-tumor drugs and agents for Alzheimer's disease). The results of the work are presented in the journal Mendeleev Communications. (2017-11-09)

A range of substances with antitumor properties was synthesized at RUDN University
Scientists from RUDN University have synthesized a number of new cytotoxic substances - the ones that can damage cells. In the future the results of the study can be used in cancer therapy. The compounds were obtained by domino reaction, a successive formation of several new chemical bonds. The study was published in the Synthesis journal (2017-10-13)

RUDN chemists propose new beneficial catalyst for initial materials in pharmacy
The collaboration of researchers from RUDN University, Centro de Química Estrutura and Baku State University proposes a new potential way to produce initial compounds for many chemical industries, including pharmacy, cosmetics, dyes and liquid crystals production. The new method of synthesis at a room temperature with high yields described in two articles published in Journal of Organometallic Chemistry and in Inorganica Chimica Acta. (2017-09-27)

Making 3-D printing safer
Within the past decade, 3-D printers have gone from bulky, expensive curiosities to compact, more affordable consumer products. At the same time, concerns have emerged that nanoparticles released from the machines during use could affect consumers' health. Now researchers report in ACS' Environmental Science & Technology a way to eliminate almost all nanoparticle emissions from some of these printers. (2017-08-30)

One-nanometer trimetallic alloy particles created
A researcher group of Tokyo Institute of Technology succeeded in developing precisely controlled alloy nanoparticles 'multimetallic nanoclusters (MNCs)' made of three metals: copper, platinum, and gold. They also discovered that MNCs show catalytic activity that is 24 times greater than commercially available carbon-supported platinum catalysts in the oxidization of hydrocarbons using oxygen in the air. (2017-07-31)

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