Results 221 to 230 of about 89,156 (285)

Development of an Efficient Stereoretentive Para‐Claisen‐Cope Rearrangement

ChemistryEurope, EarlyView.
The stereoretentive para‐Claisen‐Cope rearrangement enabled by Europium catalysis is presented, achieving precise phenol functionalization with exceptional chirality transfer under air‐ and moisture‐tolerant conditions. A novel carbonate unlocks superior enantioselectivity in the Tsuji‐Trost allylic alkylation, paving the way for highly enantioenriched
Johanna Breinsperger, Maximilian Kaiser, Nicolas Kratena, Peter Gärtner   +3 more
wiley   +1 more source

Characterization of Polycyclic Aromatic Hydrocarbons in a Shale Strata Profile from the First Member of the Upper Cretaceous Qingshankou Formation in the Sanzhao Sag, Songliao Basin, NE China. [PDF]

ACS Omega
Xiao F, Yang J, Yao Y, Li S, Huang Y, Gao X.   +5 more
europepmc   +1 more source

Indole Synthesis via Allenyl Ester; Enantioselective Total Synthesis of Geissoschizoline

ChemistryEurope, EarlyView.
An indole synthesis via an allenyl ester intermediate at ambient temperature has been developed. The mild reaction conditions allow the use of a broad range of substrates. Notably, the utility of this approach is demonstrated through the asymmetric total synthesis of geissoschizoline, a Strychnos‐type monoterpenoid indole alkaloid.
Sohsuke Moriue, Honami Nishioka, Yuto Fukuda, Hiromitsu Takayama, Mariko Kitajima, Hayato Ishikawa   +5 more
wiley   +1 more source

A Cytotoxic Indazole-based Gold(III) Carboxamide Pincer Complex Targeting DNA Through Dual Binding Modes of Groove Binding and Alkylation. [PDF]

Chemistry
Razuwika R, Sookai S, Aronson R, Kaur M, Munro OQ.   +4 more
europepmc   +1 more source

In Situ Generation of Alkyl–λ3–Iodanes as Soft and Highly Reactive Electrophiles

ChemistryEurope, EarlyView.
A convenient and practical method for the clean generation of alkyl–λ3–iodanes is reported using tetraalkylsilanes and iodine tris(trifluoroacetate). An in situ‐generated methyl–λ3–iodane works as a soft and highly electrophilic methylation reagent, which enables methylation of tertiary sulfonamides at low temperatures and following transamidation and ...
Rina Katsuta, Takayuki Watanabe, Keitaro Matsuoka, Keito Watanabe, Kosuke Higashida, Tatsuhiko Yoshino, Shigeki Matsunaga   +6 more
wiley   +1 more source

Photoredox-Catalyzed Site-Selective Intermolecular C(sp³)-H Alkylation of Tetrahydrofurfuryl Alcohol Derivatives. [PDF]

Org Lett
Abe R, Nagao K, Seki T, Hata D, Sasaki Y, Ohmiya H.   +5 more
europepmc   +1 more source

Synthesis, Photophysical, and Chemiexcitation Properties of Luminol‐Fullerene Dyads: Toward Chemiexcitation Electron Transfer

Chemistry – A European Journal, EarlyView.
The emission properties of fullerene‐luminol dyads, following either irradiation or chemiexcitation, are evaluated. Strong luminol (chemi)luminescence quenching is partially attributed to electron transfer. Abstract Fullerene‐based donor‐acceptor (D‐A) dyads have been extensively studied for their unique electronic properties, with applications in ...
Theodoros Mikroulis, Gemma M. Rodríguez‐Muñiz, Demeter Tzeli, Georgios Rotas, Miguel A. Miranda, Georgios C. Vougioukalakis   +5 more
wiley   +1 more source

A unified approach to <i>meta</i>-selective methylation, mono-, di- and trifluoromethylation of arenes. [PDF]

Chem Sci
Lai EY, Ackermann L, Johansson MJ.
europepmc   +1 more source

The Versatility of Diazirines: Properties, Synthetic and Modern Applications

Chemistry – A European Journal, EarlyView.
Diazirines are 3‐membered heterocycles containing two nitrogen atoms connected by a double bond. They possess a multi‐faceted reactivity that holds great potential for organic synthesis. This review discusses their properties, modes of activation, and their many modern uses, underlining their underappreciated versatility: as carbene precursors, but ...
Mathieu L. Lepage, Emmanuel Gras
wiley   +1 more source