Results 251 to 260 of about 157,779 (296)

Synthesis and In Vitro Anticancer Evaluation of Novel Phosphonium Derivatives of Chrysin. [PDF]

Int J Mol Sci
Halmai M, Herr DM, Mayer S, Keglevich P, Abdallah EA, Bózsity-Faragó N, Zupkó I, Nehr-Majoros A, Szőke É, Helyes Z, Hazai L.   +10 more
europepmc   +1 more source

Extraction of tin(II) from hydrochloric acid solutions by tri-n-octyl phosphine oxide.

, 1985
M. L. P. Reddy, B. Rangamannar, A. Somasekhar Reddy   +2 more
openalex   +2 more sources

Twisted 1‐ and 2‐Azaperopyrenes: Synthesis, Structure, and Properties

Chemistry – A European Journal, EarlyView.
ABSTRACT A synthesis of hitherto unknown 1‐ and 2‐azaperopyrenes, twisted nitrogen‐doped peropyrenes, is reported. The synthesis is based on a Brønsted acid‐mediated benzannulation of alkynes. Key alkyne intermediates are synthesized via two complementary routes, including a Pd/C‐catalyzed, copper‐ and amine‐free Sonogashira‐type coupling of (hetero ...
Ricardo Molenda, Arpine Vardanyan, Alexander Villinger, Peter Ehlers, Peter Langer   +4 more
wiley   +1 more source

Functional group tolerant iron-catalyzed cyclotrimerization of terminal and internal alkynes. [PDF]

Commun Chem
Klinnert B, Plietker B.
europepmc   +1 more source

Rh‐Catalyzed [2 + 2 + 2] Cycloaddition of Linked Bis(Diynes) Ar‐C≡C‐C≡C‐(CH2)3‐C≡C‐C≡C‐Ar With Quinones: Synthesis and Photophysical Properties of Bis(Arylethynyl)‐Naphthoquinones and Anthraquinones

Chemistry – A European Journal, EarlyView.
We report the synthesis bis(arylethynyl)naphtho‐ and anthraquinones via Rh(I)‐catalyzed [2 + 2 + 2] cycloaddition reactions. The substrate scope of both quinones and linked bis‐diynes was explored. Microwave irradiation remarkably enhanced yields.
Luana A. Machado, Jianhua Han, Fábio G. Delolo, Joyce C. Oliveira, Breno U. Abreu, Hállen D. R. Calado, Joannes Krebs, Leibo Tan, Qing Ye, Tobias Groß, Christoph Lambert, Camille Latouche, Abdou Boucekkine, Jean‐François Halet, Holger Braunschweig, Todd B. Marder, Eufrânio N. da Silva Júnior   +16 more
wiley   +1 more source

Stereoselective self-assembly of cis- and trans- [Pt₂L₂] metallacycles via geometrically-asymmetric 90^o Pt(II) acceptors. [PDF]

Commun Chem
Qin J, Li D, Liu W, Liao Y, Tan L, Bai H, Liu T, Wang M, Wang Y.   +8 more
europepmc   +1 more source

Rational Design Strategies for Stimuli‐Responsive DNAzymes Using Modified and Artificial Nucleotides

Chemistry – A European Journal, EarlyView.
Activity control of RNA‐cleaving DNAzymes in response to external stimuli has attracted growing interest for applications in DNA‐based diagnostics, therapeutics, and dynamic DNA nanotechnology. This review summarizes rational design strategies for stimuli‐responsive DNAzymes using modified or artificial nucleotides, including split and caged DNAzymes ...
Yusuke Takezawa, Mitsuhiko Shionoya
wiley   +1 more source

Ene-Allenes: Access from Dialkynes by an Intramolecular <i>anti</i>-Carbopalladation Cascade. [PDF]

Org Lett
Kalvani P, Vanbel C, von Köller HF, Werz DB.   +3 more
europepmc   +1 more source

A Riboflavin‐Derived Flavinium Salt Mediates Chemoselective Methylation Reactions

Chemistry – A European Journal, EarlyView.
A two‐component methylation protocol was developed, where the active flavin mediator can be recycled in a single step. Crystallographic data and NMR spectroscopy support the mechanistic proposal, while chemoselective methylation was observed for a broad range of biologically relevant substrates. ABSTRACT Selective methylation is among the most relevant
Tim Langschwager, Ekrem Suylu, Julian Zuber, Golo Storch   +3 more
wiley   +1 more source

Crystallographic, Electronic Structure, and Computational Studies of PHOX-Ni Aryne Complexes: Origins of Regioselectivity in Metal-Bound Aryne Synthesis and Difunctionalization. [PDF]

JACS Au
Umanzor A, Garcia NA, Quirion KP, Lovstedt A, Liu P, Roberts CC.   +5 more
europepmc   +1 more source