Results 61 to 70 of about 10,092 (232)

Late‐Stage Functionalization of Peptides on the Solid Phase

open access: yesAngewandte Chemie International Edition, EarlyView.
Peptide modifications are essential to control pharmacodynamic and pharmacokinetic properties of peptide drugs. Consequently, strategies that allow for efficient and rapid incorporation of non‐canonical modifications into peptides in parallel formats are highly sought after.
Marius Werner   +2 more
wiley   +1 more source

Ring-Opening Carbonyl-Olefin Metathesis of Norbornenes

open access: yes, 2019
A computational and experimental study of the hydrazine-catalyzed ring-opening carbonyl-olefin metathesis of norbornenes is described. Detailed theoretical investigation of the energetic landscape for the full reaction pathway with six different ...
Tristan, Lambert   +9 more
core   +1 more source

Polimerização de óleo de linhaça via metátese de trieno acíclico (ATMET) [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2014.Os óleos vegetais estão cada vez mais em evidência já que esses materiais renováveis e versáteis ...
Romera, Cristian de Oliveira
core  

Synthesis of Substituted P-Stereogenic Vinylphosphine Oxides by Olefin Cross-Metathesis

open access: yes, 2016
Substituted vinylphosphine oxides have been prepared in good yield and exclusive (E)-olefin selectivity via olefin cross-metathesis using Grubbs and Hoveyda-type ruthenium catalysts.
K. Michał Pietrusiewicz (1676410)   +3 more
core   +1 more source

MoO3 on zeolites MCM-22, MCM-56 and 2D-MFI as catalysts for 1-octene metathesis

open access: yesBeilstein Journal of Organic Chemistry, 2018
Highly active olefin metathesis catalysts were prepared by thermal spreading MoO3 and/or MoO2(acac)2 on MWW zeolites (MCM-22, delaminated MCM-56) and on two-dimensional MFI (all in NH4+ form).
Hynek Balcar   +3 more
doaj   +1 more source

The Influence of Various N-Heterocyclic Carbene Ligands on Activity of Nitro-Activated Olefin Metathesis Catalysts

open access: yesMolecules, 2020
A set of nitro-activated ruthenium-based Hoveyda-Grubbs type olefin metathesis catalysts bearing sterically modified N-hetero-cyclic carbene (NHC) ligands have been obtained, characterised and studied in a set of model metathesis reactions.
Michał Pieczykolan   +7 more
doaj   +1 more source

Synthesis and Isolation of Bismuth Scorpionate Complexes: Toward Bond Activation via Bismuth‐Ligand Cooperation

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT Over the past twenty years, main group chemistry has significantly expanded its scope to include reactivities once considered the exclusive domain of transition metals. Among the emerging concepts, element‐ligand cooperation has proven to be a powerful strategy for enabling bond activation reactions but remains relatively unexplored for ...
Lennart Hensle, Viktoria H. Gessner
wiley   +1 more source

Synthesis and properties of stereoregular fluoropolymers [PDF]

open access: yes, 1986
The work described in this thesis was concerned with the synthesis and metathesis ring .opening polymerization of some fluorinated norbornenes and norbornadienes.
Blackmore, Patrique Michelle
core  

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

open access: yesChemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis   +2 more
wiley   +1 more source

Comparing Ru and Fe-catalyzed olefin metathesis

open access: yes, 2014
Density functional theory calculations have been used to explore the potential of Fe-based complexes with an N-heterocyclic carbene ligand, as olefin metathesis catalysts.
Vummaleti, Sai Vikrama Chaitanya   +5 more
core   +1 more source

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