Results 91 to 100 of about 42,464 (282)

Cyclization Strategies in Carbonyl–Olefin Metathesis: An Up-to-Date Review

open access: yesMolecules
The metathesis reaction between carbonyl compounds and olefins has emerged as a potent strategy for facilitating swift functional group interconversion and the construction of intricate organic structures through the creation of novel carbon–carbon ...
Xiaoke Zhang
doaj   +1 more source

Reversibly Photoswitchable Catalysts for Olefin Metathesis Reactions

open access: yes, 2021
Azobenzene-bearing photoswitchable ruthenium catalysts were developed for olefin metathesis reactions. These catalysts exhibited an on–off switching ability in ring-closing metathesis depending on UV irradiation (>99% conversion without UV vs
Junseong Lee (1510414)   +11 more
core   +1 more source

2.10 Ring-Closing Metathesis

open access: yes, 2016
Ring-closing metathesis (RCM) has emerged as a powerful synthetic tool. Depending on the unsaturated functional groups involved, ring-closing-metathesis reactions are classified into three categories: diene ring-closing metathesis, enyne ring-closing ...
D. Lee, V. R. Sabbasani
core   +1 more source

Ambivalent Role of Rotamers in Cyclic(alkyl)(amino)carbene Ruthenium Complexes for Enantioselective Ring-Opening Cross-Metathesis

open access: yes, 2023
The development of highly efficient enantioselective olefin metathesis catalysts is a significant challenge. Using optically pure chiral cyclic (alkyl)(amino)carbene (ChiCAAC) ligands combined with preliminary mechanistic insights and density functional ...
Thomas Vives (3711946)   +11 more
core   +1 more source

Metathesis access to monocyclic iminocyclitol-based therapeutic agents

open access: yesBeilstein Journal of Organic Chemistry, 2011
By focusing on recent developments on natural and non-natural azasugars (iminocyclitols), this review bolsters the case for the role of olefin metathesis reactions (RCM, CM) as key transformations in the multistep syntheses of pyrrolidine-, piperidine ...
Ileana Dragutan   +5 more
doaj   +1 more source

Microwave-Assisted Olefin Metathesis

open access: yes, 2008
International audienceThe beneficial effect of microwave irradiation instead of classical thermal conditions in olefin metathesis reactions is illustrated through a series of literature examples of ring-closing- metathesis and cross-metathesis ...
Coquerel, Yoann   +3 more
core   +1 more source

New Facile Synthesis of Adamantyl Isothiocyanates

open access: yesSynOpen, 2017
A series of adamantyl isothiocyanates containing different substituents in the nodal positions of adamantane or spacers between the adamantane and isothiocyanate group have been synthesised by using the reaction of the corresponding adamantyl amines with
Vladimir Burmistrov   +2 more
doaj   +1 more source

Highly Active Water-Soluble Olefin Metathesis Catalyst

open access: yes, 2016
A novel water-soluble ruthenium olefin metathesis catalyst supported by a poly(ethylene glycol) conjugated saturated 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene ligand is reported.
Soon Hyeok Hong (1373670)   +1 more
core   +1 more source

Unsaturated Fatty Acid Esters Metathesis Catalyzed by Silica Supported WMe5 [PDF]

open access: yes, 2016
Metathesis of unsaturated fatty acid esters (FAEs) by silica supported multifunctional W-based catalyst is disclosed. This transformation represents a novel route towards unsaturated di-esters.
Talbi, Karima   +3 more
core   +1 more source

Strategic utilization of catalytic metathesis and photo-thermal metathesis in caged polycyclic frames

open access: yes, 2010
Highly functionalized cage compounds have been prepared via cross-metathesis (CM) using Grubbs modified N-tolyol catalyst 7. A strategic utilization of photo-thermal metathesis and catalytic metathesis sequence for the synthesis of functionalized caged ...
SEEMA, V   +11 more
core   +2 more sources

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