Results 221 to 230 of about 250,254 (357)

Light‐Mediated Decomposition of Arylseleninic Acids in Aqueous Medium: A Green Alternative Toward Organoselenium‐Functionalized Imidazo[1,2‐a]pyridines

open access: yesAsian Journal of Organic Chemistry, EarlyView.
A new protocol to prepare 2‐aryl‐3‐(arylselanyl)imidazo[1,2‐a]pyridines under blue light irradiation, using benzeneseleninic acid derivatives as selenium source, is described. The experimental design approach (DoE) was used to establish the best reaction conditions, which delivered fourteen derivatives in moderate to good yields (23%–75%) using water ...
Caroline S. Gomes   +6 more
wiley   +1 more source

Reactivity of a Methylene‐Bridged 1,3‐Bis(germylene) in Dynamic Equilibrium with Its Dimer

open access: yesAngewandte Chemie, EarlyView.
We report the properties and reactivity of an unprecedented methylene‐bridged 1,3‐bis(germylene) derivative. In the solid state, the 1,3‐bis(germylene) derivative undergoes dimerization to afford a 1,2,4,5‐tetragermacyclohexa‐1,4‐diene (Ge4CHD) derivative.
Daichi Uchida   +5 more
wiley   +2 more sources

Synthesis of Novel Dihydropyridine‐Iminium Salts Containing a Selenazine Core

open access: yesAsian Journal of Organic Chemistry, EarlyView.
An efficient method to develop novel dihydropyrido[3,2‐e][1,3]selenazines iminium salts. A comparative study of the key reagent selenourea towards thiourea and urea was carried out to assess the contribution of chalcogen to the pathway. DFT (density functional theory) calculations have predicted the optimized minimum energy structure for the hybrid ...
Reinier Lemos   +6 more
wiley   +1 more source

Selenium intake is associated with gait speed in very old adults. [PDF]

open access: yesFront Aging
Rocha CDN   +6 more
europepmc   +1 more source

Nanostructured Biomaterial‐Based Approaches to Support Induced Pluripotent Stem Cell Differentiation

open access: yesAdvanced NanoBiomed Research, EarlyView.
Induced pluripotent stem cells (iPSCs), reprogrammed from adult somatic cells, represent an innovative approach for regenerative medicine and biomedical applications. This review highlights the importance of nanostructured biomaterials, utilized as delivery systems or scaffolds, in supporting iPSC differentiation and fate through structural and ...
Beatriz A. B. R. Passos   +2 more
wiley   +1 more source

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