Results 271 to 280 of about 1,327,455 (347)

Asymmetric Aziridination of Allylic Carbamates using Ion‐Paired Rhodium Complexes and Extrapolation to C‐H Amination of Phenethyl Carbamates

open access: yesAngewandte Chemie International Edition, Accepted Article.
Aziridination of alkenes is an important route to chiral nitrogen‐containing building blocks. Here we report that carbamate‐functionalized allylic alcohols undergo highly enantioselective aziridination using achiral dimeric Rh(II,II) complexes that are ion‐paired with cinchona alkaloid‐derived chiral cations.
Arthur Lit   +4 more
wiley   +1 more source

Fabricating a hexagonal FeTe monolayer with a moiré superlattice on topological insulator Bi<sub>2</sub>Te<sub>3</sub>. [PDF]

open access: yesNanoscale Adv
Lin YH   +12 more
europepmc   +1 more source

610 Fracture Strength of SiN Thin Film Microelements and Their Size Effects

open access: bronze, 2006
Kohji MINOSHIMA   +3 more
openalex   +2 more sources

Topological Phase Transitions, Phase Diagrams, and Dielectric Properties of Pb(Zr0.7Ti0.3)O3‐Based Superlattices

open access: yesAdvanced Physics Research, EarlyView.
The phase‐field simulations are used to systematically calculate the phase diagrams of PZT/STO superlattices, considering various periodicities, strains, and temperatures. A rhombohedral‐type labyrinth domain oriented along the [110] direction is observed under low compressive strain. The dielectric responses for different polar topologies are examined,
Zhouping Chen   +4 more
wiley   +1 more source

[610] AN OPEN-LABEL, COMPARATIVE, MULTICENTER STUDY OF PEGINTERFERON a-2a PLUS RIBAVIRIN FOR CHRONIC HEPATITIS C/HEPATITIS B CO-INFECTION VERSUS CHRONIC HEPATITIS C MONOINFECTION: AN INTERIM REPORT

open access: bronze, 2007
Chun‐Jen Liu   +24 more
openalex   +1 more source

Culturally Modified Trees and Bark and Wooden Material Culture From Yagara Country, Southeast Queensland, Australia: A Preliminary Overview of Indigenous Biocultural Knowledge

open access: yesArchaeology in Oceania, EarlyView.
ABSTRACT This paper outlines preliminary results from our multimethod research about Culturally Modified Trees (CMTs) and associated bark and wooden material culture in Yagara Country in southeast Queensland. Methods employed include historical source and modern database analysis, archaeological field surveys, semi‐structured interviews with Yagara ...
Kate Greenwood   +3 more
wiley   +1 more source

Risk of New-Onset Type 2 Diabetes Among Vaccinated Adults After Omicron or Delta Variant SARS-CoV-2 Infection.

open access: yesJAMA Netw Open
Wee LE   +16 more
europepmc   +1 more source

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