Results 41 to 50 of about 938,190 (242)

Domino ring-opening–ring-closing enyne metathesis vs enyne metathesis of norbornene derivatives with alkynyl side chains. Construction of condensed polycarbocycles

Beilstein Journal of Organic Chemistry, 2018
The metathesis of norbornene derivatives with alkynyl side-chain with Grubbs’ ruthenium alkylidine as catalyst has been investigated with the objective of constructing condensed polycyclic structures.
Ritabrata Datta, Subrata Ghosh
doaj   +1 more source

Olefin cross metathesis and ring closing metathesis in polymer chemistry [PDF]

, 2017
The use of olefin cross metathesis in preparing functional polymers, through either pre-functionalisation of monomers or post-polymerisation functionalisation is growing in both scope and breadth. The broad functional group tolerance of olefin metathesis
Alkattan, Mohammed, Fern Sinclair, Shaver, Michael P., Sinclair, Fern, Joëlle Prunet, Prunet, Joëlle, Mohammed Alkattan, Michael P. Shaver, Shaver, Michael P.; id_orcid   +8 more
core   +1 more source

Mechanoactive Biomaterials for Cell–Matrix Mechanotransduction

Advanced Materials, EarlyView.
The graphical abstract shows how individual triggers (force, light, or temperature) and combined optothermal or receptor‐targeted actuation induce material responses at the tissue, cellular, and receptor scales. Their spatial (global or focused) and temporal (continuous or cyclic) modulation determines the resulting mechanical output.
Yi‐Tung Lu, Alison E. John, Marc A. Fernández‐Yagüe   +2 more
wiley   +1 more source

Enamide−Olefin Ring-Closing Metathesis

Organic Letters, 2001
[reaction: see text] The first examples of ring-closing metathesis reactions of olefin-containing enamides using ruthenium-based catalysts have been demonstrated. A preliminary investigation into the scope and limitations, leading to protected five- and six-membered cyclic enamides, will be presented.
Kinderman, S.S., van Maarseveen, J.H., Schoemaker, H.E., Hiemstra, H., Rutjes, F.P.J.T.   +4 more
openaire   +5 more sources

On-oligonucleotide olefin metathesis in water

Nature Communications
Genetically-encoded libraries represent a breakthrough in the large-scale screening of chemical matter. Within such technologies, encoded libraries of synthetic macrocycles generated by ring-closing metathesis hold significant potential to address ...
Chun Zhang, Christian O. Blanco, Anastasiya Khimich, Deryn E. Fogg, Andreas Brunschweiger   +4 more
doaj   +1 more source

Design and synthesis of hybrid cyclophanes containing thiophene and indole units via Grignard reaction, Fischer indolization and ring-closing metathesis as key steps

Beilstein Journal of Organic Chemistry, 2015
We demonstrate a new synthetic strategy to cyclophanes containing thiophene and indole moieties via Grignard addition, Fischer indolization and ring-closing metathesis as key steps.
Sambasivarao Kotha, Ajay Kumar Chinnam, Mukesh E. Shirbhate   +2 more
doaj   +1 more source

Design of Heterogeneous Hoveyda–Grubbs Second-Generation Catalyst–Lipase Conjugates

Molecules, 2016
Heterogeneous catalysts have been synthesized by the conjugation of Hoveyda–Grubbs second-generation catalyst with a lipase. The catalytic properties of the organometallic compound in solution were firstly optimized, evaluating the activity of Ru in the ...
Anthony Neville, Javier Iniesta, Jose M. Palomo   +2 more
doaj   +1 more source

Synthesis of Pentacycloundecane (PCUD) Based Spiro-Pyrano-Cage Framework via Ring-Closing Metathesis

Molbank, 2023
Here, we demonstrate a short synthetic route to pyrano cage systems containing pentacycloundecane units by employing ring-closing metathesis (RCM) as a key step.
Sambasivarao Kotha, Mohammad Salman, Subba Rao Cheekatla   +2 more
doaj   +1 more source

Ring-Closing Metathesis and Ring-Opening Metathesis Polymerization toward Main-Chain Ferrocene-Containing Polymers

, 2018
We report the preparation of cyclic ferrocenyl olefins with various substituents and different ring sizes by ring-closing metathesis (RCM). These ferrocene-containing monomers were subject to ring-opening metathesis polymerization (ROMP), leading to main-
Yudi Zhang (5747321), Tianyu Zhu, Stephen L. Craig (1271094), Ye Sha, Ye Sha (1617667), Stephen L. Craig, Chuanbing Tang (1404652), Shaobo Tan, Shaobo Tan (2154850), Yujin Cha, Yujin Cha (5941508), Tianyu Zhu (1525390), Yudi Zhang, Chuanbing Tang   +13 more
core   +1 more source

Hydroxycyclopentanone derivatives from D-Mannose via ring closing metathesis: An improved synthesis of a key intermediate of Tricyclo-DNA [PDF]

, 2003
A large scale, 10 step synthesis of cyclopentanone 1 , starting from the chiral pool compound D-mannose, is described. The synthesis proceeds via a ring closing metathesis reaction as the key step in an overall yield of 23%.
Leumann, Christian, Vonlanthen, David
core   +1 more source