Iridium-catalyzed Z-retentive asymmetric allylic substitution reactions
In synthetic organic chemistry, Z-olefins are a challenging synthetic target to produce in the lab due to their relative thermodynamic instability. The Z-olefins form an unsaturated compound with a CnH2n formula that can be readily isomerized. Analog.....»»
Aggregation-induced catalysis: Asymmetric catalysis with chiral aggregates
Asymmetric synthesis and catalysis have been actively pursued in chemical and materials sciences for some time. Increasing numbers of drugs and pesticides contain chiral structural units in their structures since drug actions require conformational m.....»»
Bulky size frustrates radical molecules to boost chemical reactions, shows study
How to harness the potential of highly reactive radical molecules to work in pairs and spur transformative chemistry?.....»»
Unimolecular reactions of anti-glycolaldehyde oxide and its reactions with one and two water molecules
Criegee intermediates are produced in the ozonolysis of unsaturated compounds in the atmosphere. These intermediates are especially important because they contribute to the formation of OH radicals during the night and to the formation of secondary o.....»»
Recent advances in vacuum ultraviolet photochemistry of astrochemically important small molecules
The photodissociation of an isolated molecule from a well-defined initial quantum state provides a lens through which one can investigate how and why chemical reactions occur, and provides numerous opportunities for fruitful, synergistic collaboratio.....»»
Ni-Ti bimetallic system mediates enantioselective reductive aryl-benzylation of alkenes using free alcohols
Prof. Wang Xiaoming's group at the Shanghai Institute of Organic Chemistry, of the Chinese Academy of Sciences, has demonstrated the first nickel-titanium, bimetallic, system-catalyzed, asymmetric reductive aryl-benzylation of alkenes using benzyl al.....»»
New findings shed light on the chemical evolution of the Earth
The sun as a source of energy, and catalysts to accelerate chemical reactions, were of critical importance in the emergence of the first biochemical molecules on Earth. A research team has now shown that a solid deposited from ammonia and methane pla.....»»
New breakthrough shows how short pulses of light destroy particles
Polaritons are a peculiar state, a kind of quasi-particles consisting of part-light and part-matter that can bring unexpected abilities to conventional chemical reactions. New research from Umeå University and others reveals that when the polaritons.....»»
A user-friendly platform for virtual exploration of chemical reactions
A new online platform to explore computationally calculated chemical reaction pathways has been released, allowing for in-depth understanding and design of chemical reactions......»»
How to use Reactions in video calls on macOS Sonoma
From recognizing that you've raised your hand to speak, to for some reason showing you being rained on, macOS Sonoma is transforming the familiar video call. Here's how to use it.Familiar fireworks, balloons and more from iOS are now available within.....»»
Theoretical discovery: A new path for quantum physics to control chemical reactions
Controlling chemical reactions to generate new products is one of the biggest challenges in chemistry. Developments in this area impact industry, for example, by reducing the waste generated in the manufacture of construction materials or by improvin.....»»
Light and nickel found to simplify cross-coupling reactions
Cross-coupling reactions—chemical transformations in which two fragments are joined together—are a valuable tool in the synthesis of organic molecules. Applications range from drug development and synthesis of naturally occurring molecules to mat.....»»
macOS 14 feature roundup: Presenter Overlay, Reactions, widgets, more
The new macOS Sonoma may have been drowned out in WWDC's focus on the Apple Vision Pro, but it has received a startling number of improvements — including ones Apple didn't even mention.With Craig Federighi starting with the new screensavers, it di.....»»
Unraveling the role of the NiO electrocatalyst in alcohol electrooxidation reactions
A study led by Dr. Wei Chen, Prof. Yuqin Zou, and Prof. Shuangyin Wang (State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Educa.....»»
Intentional defects make for better reactions, researchers report
A defect is not always a bad thing. In fact, when it comes to improving the electrocatalysis process that produces clean-burning hydrogen gas, it may be a very good thing. Researchers based in China engineered an electrocatalyst—which speeds up a d.....»»
Researchers develop stepwise strategy for carbon dioxide reduction to multicarbon products
Though efficient C2+ production from CO2 electrocatalytic reduction reaction (CO2ERR) has become a promising approach to mitigate CO2 emissions and store intermittent renewable energy, it suffers from low selectivity and undesired side reactions......»»
Video: This kind of ice is actually glass
This episode of Reactions dives into something truly out-of-this-world: amorphous ice......»»
Reflecting on 20 years of progress in interfacial sciences and engineering
Interfacial reactions happen at the boundary where materials in different phases, for example a solid and a liquid, meet each other. These reactions drive all elemental cycling on Earth and play pivotal roles in human activities such as agriculture,.....»»
Space tractor beams may not be the stuff of sci-fi for long
On Feb. 10, 2009, disaster struck hundreds of miles above the Siberian Peninsula. That evening, a defunct Russian satellite orbiting Earth crashed into a communications satellite called Iridium 33 moving at a speed of thousands of miles per hour. Bot.....»»
Industrially applied and relevant transformations of 1,3-butadiene using homogeneous catalysts
The use of 1,3-butadiene as a cheap and abundant raw material for new applications has attracted more interest in recent decades, specifically in the chemical industry. A recently published review covers several important homogeneously catalyzed proc.....»»
Study examines how DNA damage is repaired by antioxidant enzymes
A typical human cell is metabolically active, roaring with chemical reactions that convert nutrients into energy and useful products that sustain life. These reactions also create reactive oxygen species, dangerous by-products like hydrogen peroxide.....»»