Results 51 to 60 of about 35,734 (288)

Tandem Ring‐Opening–Ring‐Closing Metathesis for Functional Metathesis Catalysts [PDF]

Angewandte Chemie International Edition, 2016
AbstractUse of a tandem ring‐opening–ring‐closing metathesis (RORCM) strategy for the synthesis of functional metathesis catalysts is reported. Ring opening of 7‐substituted norbornenes and subsequent ring‐closing metathesis forming a thermodynamically stable 6‐membered ring lead to a very efficient synthesis of new catalysts from commercially ...
Amit A. Nagarkar, Mohammad Yasir, Aurelien Crochet, Katharina M. Fromm, Andreas F. M. Kilbinger   +4 more
openaire   +6 more sources

Controlled molecular architectures via ring opening metathesis polymerisation [PDF]

, 1995
This thesis describes studies into the ring opening metathesis polymerisation (ROMP) of some monocyclic alkenes, the living polymerisation of cyclopentene and the preparation of novel block copolymers and novel polyethylene architectures using having ...
Dounis, Panagiotis
core  

Syntheses and activities of indol-2-ylidene-ligated ruthenium-based olefin metathesis catalysts

, 2022
Here we report a new family of indol-2-ylidene (IdY)-ligated Ru-based olefin metathesis catalysts (Ru−IdY) and their X-ray crystal structures which show a unique conformation of the ruthenium environment.
Hyunho, Kim, Eunsung, Lee, Minseop, Kim, Sukwon, Hong, Seyong, Kim   +4 more
core   +1 more source

Circularly Polarized Red‐NIR Emission With High Dissymmetry Factor From Achiral [Mo6I8(OCOC2F5)6]2− Cluster Anion Embedded in a Bent‐Core Liquid Crystal Host

Advanced Optical Materials, EarlyView.
Associating a chiral bent core liquid crystal molecule, that self‐assembles into helical nanofilaments, with an achiral red‐NIR phosphorescent octahedral molybdenum cluster produces a hybrid material exhibiting efficient red‐NIR circularly polarized emission under UV excitation.
Jeanne Rebours, Shamima Akhter, Md Kamrul Hasan, Serge Paofai, Maria Amela‐Cortes, Marianne Estelle Prévôt, Yann Molard   +6 more
wiley   +1 more source

Fattori posizionali nella metatesi del sardo sud-occidentale

Annali Online dell'Università di Ferrara. Sezione Lettere, 2013
This paper aims to provide a descriptive and theoretical account of a Southern Sardinian metathesis in terms of lateral relations. Assuming the tenets of the CVCV model (Lowenstamm 1996; Scheer 2004), also known as Strict CV, it has been argued that the ...
Rosangela Lai
doaj   +1 more source

Synthesis of fluorinated δ-lactams via cycloisomerization of gem-difluoropropargyl amides

Beilstein Journal of Organic Chemistry, 2010
gem-Difluoro-1,7-enyne amides are suitable building blocks for the synthesis of difluorodihydropyridinones via a ring-closing metathesis reaction, and of 4,4-difluoro-3-oxoisoquinolines through a ring-closing metathesis–enyne metathesis tandem reaction ...
Satoru Arimitsu, Gerald B. Hammond
doaj   +1 more source

Ring opening metathesis polymerisation of phenylnorbornene dicarboxyimide derivatives [PDF]

, 2003
The work described in this thesis illustrates that a series of exo-phenyl norbomene dicarboxyimide derivatives are synthesised and characterised using several spectroscopic methods.
Mzanywa, Neeba Lucky
core  

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

, 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), Karol Grela (1478173), Oleg M. Demchuk (3067341), Anna Michrowska (2524744)   +3 more
core   +1 more source

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

Catalytic Functionalization of Unactivated π‐Bonds Enabled by Bidentate Directing Auxiliaries

Angewandte Chemie, EarlyView.
This review explores how bidentate directing auxiliaries have advanced transition‐metal catalysis for unactivated alkene/alkyne functionalization. By leveraging chelated intermediates, bidentate directing auxiliaries enable precise hydrofunctionalization, difunctionalization, and C─H activation of π‐bonds with unique selectivity and reactivity.
Seunghyeon Cho, Al Vicente Riano D. Lisboa, Juntao Sun, Taeho Kang, Keary M. Engle   +4 more
wiley   +2 more sources