Regulated [1,2]-Wittig Reaction Attains Products with Specific Stereochemistry

Regulated [1,2]-Wittig Reaction Attains Products with Specific Stereochemistry

For many years, chemists have regarded the [1,2]-Wittig rearrangement as a tenacious deviation from the norm – a potent carbon–carbon bond-forming reaction thought to occur via erratic radical pairs and largely eluding precise catalytic management. However, a recent investigation reveals that it can actually be directed with precision, paving the way for enantioenriched tertiary alcohols. […]

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Synthesis of Stable Nitrogen Radical Sequences

Synthesis of Stable Nitrogen Radical Sequences

Numerous radical chains comprising several nitrogen atoms have been effectively synthesized, demonstrating impressive stability at room temperature for extended periods. Scientists are hopeful that this stability may allow these chains to function as a viable storable source of nitrenes. Nitrenes are often challenging to manage due to their significant reactivity but hold considerable value for […]

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Ancient Carbon Emissions From Dark Lakes Raise Atmospheric Levels

Ancient Carbon Emissions From Dark Lakes Raise Atmospheric Levels

The waters of Lac Mai Ndombe resemble cold tea. Dark, almost non-transparent, tainted a deep brown by eons of decaying plant matter flowing in from the adjacent swamp forests — Africa’s largest blackwater lake lies in the center of the Democratic Republic of Congo, four times the size of Lake Constance, mostly unexplored, predominantly unmeasured. […]

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Identifying Blood Biomarkers for Triggers of Multiple Sclerosis

Identifying Blood Biomarkers for Triggers of Multiple Sclerosis

IT IS a biological stowaway that nearly every adult on the planet harbors, a silent companion nestled within the very immune cells designed to guard us. For many, the Epstein-Barr virus (EBV) is a benign squatter, a remnant of a childhood fever or a teenage episode of glandular fever that has entered a lifelong dormancy. […]

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The Adaptable Atom: Fueling Various Uses in Science and Technology

The Adaptable Atom: Fueling Various Uses in Science and Technology

At the Korea Institute of Science and Technology (KIST) located in Seoul, investigators have achieved notable advancements in addressing a challenge in green hydrogen generation. In conventional water electrolysis, two distinct reactions take place: hydrogen production at the cathode and oxygen production at the anode. These processes necessitate different catalysts, frequently platinum for hydrogen and […]

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Importance of Uranus' Extended Cooling Pattern Discovered

Importance of Uranus’ Extended Cooling Pattern Discovered

For a duration of fifteen hours last January, the James Webb Space Telescope concentrated on Uranus, generating the inaugural three-dimensional representation of its upper atmosphere. Under the leadership of Paola Tiranti, the results were published in Geophysical Research Letters. The intricate magnetic field of Uranus, tilted and misaligned compared to Earth’s, affects its auroras and […]

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Moderna's Vaccine Regulatory Approvals and Obstacles

Moderna’s Vaccine Regulatory Approvals and Obstacles

It has been an eventful week for mRNA vaccine manufacturer Moderna and the US Food and Drug Administration (FDA). On 10 February, the FDA notified Moderna that it would not approve the company’s submission for a new influenza vaccine – a verdict that supposedly saw senior officials overruling recommendations from FDA personnel, a claim that […]

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