Results 291 to 300 of about 672,883 (341)

Molecular spin sensor for in-situ monitoring of crystallization behavior and phase transition in aromatic materials. [PDF]

Nat Commun
Liu L, Zhao C, Zhang Y, Zhang Z, Wang C, Wang T.   +5 more
europepmc   +1 more source

Asymmetric Strategies for the Synthesis of Enantiopure α‐/β‐/γ‐Thio‐Carboxylic Acids Bearing a Stereocentre at CS Bond

Advanced Synthesis &Catalysis, EarlyView.
Enantioenriched α‐/β‐/γ‐thiocarboxylic acids featuring C–S chirality are valuable targets in organic synthesis. This review outlines recent progress in their asymmetric synthesis, including chiral pool approaches, metal‐ /organo‐catalysis, and emerging biocatalytic strategies. Enantiomerically pure α‐/β‐/γ‐thiocarboxylic acids bearing a stereocentre at
Jingyue Wu, Daniele Castagnolo
wiley   +1 more source

Indoor air pollution inequalities among children and adolescents in Germany: an analysis of repeated cross-sectional data from GerES and KiGGS. [PDF]

Sci Rep
Wiehn J, Tietjen S, Beese F, Birmili W, Bunge C, Daniels A, Fernandez Lahore A, Hahn D, Kolossa-Gehring M, Kuhnert R, Murawski A, Waldhauer J, Zocholl D, Conrad A.   +13 more
europepmc   +1 more source

Synthesis of 3,4‐Dihydroquinazolinones via Base‐Promoted Formal [4 + 2] Cycloadditions

Advanced Synthesis &Catalysis, EarlyView.
In this work a straightforward, metal‐free and general protocol for the synthesis of 3,4‐dihydroquinazolin‐2(1H)‐ones is described. From 2‐chloromethyl anilines upon treatment with a base an aza‐o‐quinone methide is in situ generated. This highly reactive intermediate readily reacts through [4 + 2] cycloaddition with isocyanates affording 32 ...
Sergio Torres‐Oya, Manuel A. Fernández‐Rodríguez, Mercedes Zurro   +2 more
wiley   +1 more source

Theoretical Investigation of Quantum Size Effect on the Electronic Structure and Photoelectric Properties for Graphdiyne Nanotubes. [PDF]

Nanomaterials (Basel)
Zhang T, Wen H, Li Z, Zhao X, Wang X, Wang J.   +5 more
europepmc   +1 more source

CO2‐to‐Cyclic Carbonate Transformation at Ambient Pressure Using a Mechanochemically Prepared Ti(III) Catalyst

Advanced Synthesis &Catalysis, EarlyView.
A Ti(III) complex synthesized mechanochemically catalyzes the cycloaddition of CO2 (1 bar) with terminal, internal, and trisubstituted epoxides. Mechanistic studies by density functional theory calculations reveal that the superior activity of Ti(III) compared to Ti(IV) arises from its lower oxophilicity, facilitating CO2 insertion into Ti–O bonds, as ...
Elena Álvarez‐Ruiz, Marta Navarro, Ignacio Sancho, Israel Fernández, Cristina Santamaría, Alberto Hernán‐Gómez   +5 more
wiley   +1 more source

A Review of the Most Frequent Compounds, Metals, and Compound and Metal Mixtures Found at U.S. Superfund Sites and Their Carcinogenic Potential. [PDF]

Chem Res Toxicol
Dunnick JK, Schmitt CP, Dixon D.
europepmc   +1 more source

Synthesis of Amidines Via P(III)/P(V)O Redox Catalyzed In Situ Formation of Imidoyl Chlorides From Amides

Advanced Synthesis &Catalysis, EarlyView.
A series of amidines are prepared via PIII/PVO redox catalyzed in situ formation of imidoyl chlorides from amides. The desired products are obtained in good to excellent yields. Moreover, the protocol is applied to the synthesis of Erlotinib. Amidines are a ubiquitous class of bioactive compounds found in a wide variety of natural products; thus ...
Viktorija Medvarić, Jan Paradies, Thomas Werner   +2 more
wiley   +1 more source

Synthesis of C₆₀-CM-C _<i>n</i> and its effect on the stabilization of nitrocellulose. [PDF]

RSC Adv
Chu H, Jin B, Zhao Y, Peng R.
europepmc   +1 more source

Nanomaterial‐Based Optical Biosensors for SARS‐CoV‐2 Detection: A Retrospective of the Pandemic

Advanced Sensor Research, EarlyView.
This review discusses nanomaterial‐based optical biosensors developed for or adapted to the detection of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2). It concludes by providing a perspective on how lessons learned during the coronavirus disease of 2019 (COVID‐19) pandemic may be applied for future research on nanomaterial‐based ...
Flavie Martin, Scott G. Harroun, Michel Meunier   +2 more
wiley   +1 more source