Results 131 to 140 of about 18,824 (297)

Fluorogenic Sydnones for Bioorthogonal Labeling of DNA

open access: yesChemistry – A European Journal, EarlyView.
Conjugates of sydnones with cyanine‐styryl dyes combine bioorthogonal reactivity with fluorogenicity. The reactivity with bicyclo[6.1.0]non‐4‐yne (BCN)‐modified DNA showed second‐order rate constants of up to k2 = 2,300 M−1s−1 and fluorescence turn‐on by one magnitude of order.
Kerstin Müller   +1 more
wiley   +1 more source

Studies on Carbamates. IX. The Carbamate of Allylamine. [PDF]

open access: yesActa Chemica Scandinavica, 1952
Arne Jensen   +2 more
openaire   +1 more source

Revisiting the synthesis of dimethyl carbonate from methanol and carbon dioxide

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract The process for producing dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol is explored in this article. It provides an overview of the thermodynamics involved in DMC synthesis, discussing the challenges and potential solutions. The article highlights the reported use of catalysts and dehydrating agents to improve DMC yield and ...
Diego Alexander Santos Araque   +3 more
wiley   +1 more source

Studies on Carbamates. XII. The Carbamates of the Butylamines. [PDF]

open access: yesActa Chemica Scandinavica, 1957
Mogens Ballund Jensen   +2 more
openaire   +1 more source

Composite membranes comprising of polymeric and molecular amines embedded in poly(vinyl alcohol) matrices to facilitate CO2/H2 separation

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Polymeric and molecular amines embedded in hygroscopic matrices to facilitate CO2 transport for CO2/H2 separation. Abstract This work dealt with composite membranes comprising of polyvinylamine (PVAm) and triethylenetetramine (TETA) embedded in poly(vinyl alcohol) (PVA) for CO2/H2 separation via facilitated transport of CO2, where polymeric and ...
Steve Yijie Hu, Kean Wang, Xianshe Feng
wiley   +1 more source

Studies on Carbamates. VI. The Carbamate of Glycine. [PDF]

open access: yesActa Chemica Scandinavica, 1952
Arne Jensen   +5 more
openaire   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

open access: yesDeep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Air Stability of Sulfide Solid Electrolytes: From Theoretical Insights to Practical Solutions

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This paper reviews research progress on the air stability of SSEs, covering their instability mechanisms and modification strategies, while outlining core challenges and future directions for practical applications. Sulfide solid electrolytes are pivotal for enabling high‐performance all‐solid‐state batteries due to their high ionic conductivity and ...
Hongbing Ding   +10 more
wiley   +1 more source

Synthesis of 2‐Aza‐Bicyclo[4.3.0]nonane Derivatives Related to the Camporidines via Intramolecular [3+2]‐Cycloaddition

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The intramolecular nitrile oxide olefin [3 + 2]‐cycloaddition offers a reliable entry toward 2‐aza‐bicyclo[4.3.0]‐nonanes, a substructure found in several bioactive piperidine alkaloids. The required oxime precursors were prepared in non‐racemic form by Ir‐catalyzed asymmetric allylation and ring‐closing metathesis.
Alicia Köcher   +5 more
wiley   +1 more source

One‐Pot Gold(I)‐Catalyzed Rautenstrauch Rearrangement/Nitrosocarbonyl Hetero‐Diels–Alder Reaction Sequence for the Synthesis of α‐Hydroxylated Cyclopentenones

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The regio‐ and stereoselective synthesis of ring‐fused α‐hydroxy‐2‐cyclopentenones is achieved by a one‐pot gold(I)‐catalyzed Rautenstrauch rearrangement/nitrosocarbonyl hetero‐Diels–Alder reaction/ring opening sequence carried out on suitable propargyl esters followed by selective NO bond cleavage.
Dina Scarpi   +3 more
wiley   +1 more source

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