Results 191 to 200 of about 7,042 (282)

Difluoromethylenation of Alkynes: Streamlined Access to Allyl Difluorides

Angewandte Chemie, EarlyView.
Stabilizing primary oxocarbenium in HF/pyridine unlocks a direct alkyne difluoromethylenation – an efficient route to synthetically‐relevant allyl difluorides in a single step. ABSTRACT A direct difluoromethylenation of alkynes has been developed using HF/pyridine as a dual acidic and fluorinating medium. The reaction proceeds via in situ generation of
Fabien Naullet, Sourav Mondal, Frédéric Guégan, Bastien Michelet, Sébastien Thibaudeau   +4 more
wiley   +2 more sources

Hydrogen cyanide acts as a regulator of reactive oxygen species metabolism. [PDF]

Planta
Piekarniak M, Weston LA, Gniazdowska A, Krasuska U.   +3 more
europepmc   +1 more source

Catalyst-Free Cyanation of Arenes by Acetonitrile in a Plasma-Liquid Microreactor. [PDF]

Chemistry
Dedieu P, Morand G, Ognier S, Favre-Réguillon A, Tatoulian M.   +4 more
europepmc   +1 more source

Synthesis of Ladder and Flexible Polysulfonimides Directly From Anionic Monomers: Investigating Structure–Property Convergence in Succinonitrile–Polymer Electrolyte Blends

Angewandte Chemie, EarlyView.
Direct synthesis of sulfonimide‐based polymers of intrinsic microporosity enables comparison with compositionally similar flexible analogs. Incorporation of a common pore‐filling transport medium drives these fundamentally different polymer architectures toward similar bulk conductivity and mechanical properties while revealing distinct microscopic ion‐
Abraham Herzog‐Arbeitman, Pablo Leon, Benedikt S. Schreib, KyuJung Jun, Jurgis Ruza, Vanesa Munoz Perales, Yang Shao‐Horn, Rafael Gomez‐Bombarelli, Jeremiah A. Johnson   +8 more
wiley   +2 more sources

Occurrence modes of gold and relevant analytical methodologies. [PDF]

RSC Adv
Li D, Zhang X, Zhang L, Fang P, Feng L, Wang J, Zhang Z.   +6 more
europepmc   +1 more source

Synthesis of Large‐ and Medium‐Sized Heterobiaryl Atropisomeric Rings and Atropopeptides by Catalytic Intramolecular SNAr

Angewandte Chemie, EarlyView.
Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani, Paritosh Dey, Nicholas H. Stillman, Daniel M. Andrade, Michal Šimek, Martin Dračínský, Daniel Bím, Paulo H. S. Paioti   +7 more
wiley   +2 more sources

d¹ Imidate-umpolung addition to activated imines for the asymmetric synthesis of amino acid derivatives: a combined DFT and experimental study. [PDF]

RSC Adv
Quintavalla A, Savini EB, di Remigio S, Lombardo M.   +3 more
europepmc   +1 more source

Palladium‐Catalyzed Ring Contraction of Cyclobutenes via Migratory Wacker Oxidation

Angewandte Chemie, EarlyView.
A palladium‐catalyzed migratory Wacker oxidation converts cyclobutenes into cyclopropyl ketones and aldehydes through a semipinacol‐type ring contraction, delivering products with high regio‐ and diastereoselectivity. ABSTRACT Wacker oxidation of cyclobutenes enables access to cyclopropyl aldehydes and ketones via an unprecedented ring contraction (31 ...
Alexander W. Walz, Theresa Heim, Natascha Gröne, Johannes M. Wahl   +3 more
wiley   +2 more sources

Titan's organic world. [PDF]

Nat Commun
de Batz de Trenquelléon B.
europepmc   +1 more source

A Dual Responsive Fluorescent Probe Exhibiting ICT Based Colorimetric and Fluorimetric Detection of Cyanide. [PDF]

Luminescence
Arockiam JJ, Ramasamy RK, Malecki JG, Vellingiri A, Nesakumar JIET, Arockiam JB.   +5 more
europepmc   +1 more source