Results 41 to 50 of about 82,167 (149)

Recent advances in transition metal-catalyzed Csp2-monofluoro-, difluoro-, perfluoromethylation and trifluoromethylthiolation

open access: yesBeilstein Journal of Organic Chemistry, 2013
In the last few years, transition metal-mediated reactions have joined the toolbox of chemists working in the field of fluorination for Life-Science oriented research.
Grégory Landelle   +4 more
doaj   +1 more source

Flavin Catalysts in Organic Synthesis

open access: yesAngewandte Chemie International Edition, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +1 more source

Elemental fluorine as a valid synthetic reagent [PDF]

open access: yes, 1994
Chapter I Chapter I reviews the uses of elemental fluorine in selective organic synthesis and its use in the generation of selective electrophilic fluorinating agents.
Skinner, Christopher John
core  

Photochemical and Thermal Activation of a Diarylbismuth Azide

open access: yesChemistry – A European Journal, EarlyView.
We report the synthesis and characterization of a novel diarylbismuth azide and its divergent reactivity upon thermal or photochemical activation. These findings contribute expanding the reactivity landscape of heavy pnictogen compounds and sets the basis for further investigations. ABSTRACT Azides are widely employed in synthesis as convenient nitrene
Giacomo Pugliese   +5 more
wiley   +1 more source

Aplicações sinteticas de enzimas imobiliadas em organo-gel e gel de agar [PDF]

open access: yes, 1997
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.As microemulsões água-em-óleo (água + óleo + surfactante) podem ser utilizadas para formar géis elásticos e termoreversíveis pela adição de gelatina.
Queiroz, Neide
core  

Multigramme synthesis and asymmetric dihydroxylation of a 4-fluorobut-2E-enoate

open access: yesBeilstein Journal of Organic Chemistry, 2013
Esters of crotonic acid were brominated on a multigramme scale using a free radical procedure. A phase transfer catalysed fluorination transformed these species to the 4-fluorobut-2E-enoates reproducibly and at scale (48–53%, ca. 300 mmol).
James A. B. Laurenson   +4 more
doaj   +1 more source

N‐Boron‐Functionalized Anionic N‐Heterocyclic Carbenes (NBA‐NHCs)—A Case Study

open access: yesChemistry – A European Journal, EarlyView.
The synthesis and characterization of a new family of N‐boron‐functionalized anionic N‐heterocyclic carbenes (NBA‐NHCs), IiPrB(CN)3−, IiPr(C2F5)BF2−, IMesB(CN)3−, and IMes(C2F5)BF2−, is reported. ABSTRACT The synthesis and characterization of a new family of N‐boron‐functionalized anionic NHCs (NBA‐NHCs), IiPrB(CN)3− (5), IiPr(C2F5)BF2− (6), IMesB(CN)3−
Sophie Mann   +3 more
wiley   +1 more source

On the Ability of Bismuth to Couple Weakly Coordinating Anions

open access: yesAngewandte Chemie, Volume 138, Issue 29, 13 July 2026.
Motivated by the growing number of catalytic processes based on high‐valent Bi, we investigated in silico the reductive elimination step responsible for the coupling of weakly coordinating anions. Relativistic contributions appeared to be decisive to the electronic description of the intermediates involved in this process.
Lucas Mele   +3 more
wiley   +2 more sources

Recent Advances of Perovskite Oxides for Air Pollution Control Chemistry: The Closed Loop From Design to Application

open access: yesEcoEnergy, EarlyView.
This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin   +9 more
wiley   +1 more source

The influence of the C-N⁺ ----- F-C charge dipole interaction in fluoro organic chemistry [PDF]

open access: yes, 2009
Chapter 1 introduces the discovery of elemental fluorine by H. Moissan and some uses of inorganic fluoride. Organo fluoro compounds and their place in pharmaceuticals and agrochemicals are also introduced.
Gooseman, Natalie Elizabeth Jane
core   +2 more sources

Home - About - Disclaimer - Privacy