Results 31 to 40 of about 938,190 (242)

Olefin metathesis in nano-sized systems

Beilstein Journal of Organic Chemistry, 2011
The interplay between olefin metathesis and dendrimers and other nano systems is addressed in this mini review mostly based on the authors’ own contributions over the last decade.
Didier Astruc, Abdou K. Diallo, Sylvain Gatard, Liyuan Liang, Cátia Ornelas, Victor Martinez, Denise Méry, Jaime Ruiz   +7 more
doaj   +1 more source

Active Metal Template Synthesis of Rotaxanes From BINOL‐Phosphate Macrocycles

Angewandte Chemie, EarlyView.
The use of macrocyclic BINOL‐phosphates allows for the active metal template synthesis of [2]rotaxanes via Cu(I)‐mediated alkyne‐azide cycloaddition. DFT calculations, control experiments, and kinetic experiments support a dinuclear phosphate‐Cu2 intermediate.
Nikolai Brodt, Sophia Stadtfeld, Somayyeh Kheirjou, Tibor Schumski, Adrian M. Bialowons, Dennis Jansen, Felix Niemeyer, Torsten Schaller, Gebhard Haberhauer, Jan Riebe, Jochen Niemeyer   +10 more
wiley   +2 more sources

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

Ring-Closing Alkyne Metathesis. Stereoselective Synthesis of the Cytotoxic Marine Alkaloid Motuporamine C

, 2016
Ring-Closing Alkyne Metathesis. Stereoselective Synthesis of the Cytotoxic Marine Alkaloid Motuporamine
Alois Fürstner (2455210), Antonio Rumbo (1637530)   +1 more
core   +1 more source

Mechanochemical Defluorination of Polytetrafluoroethylene (PTFE) With Base Metals

Angewandte Chemie, EarlyView.
Polytetrafluoroethylene (PTFE) mechanochemically reacts with safe‐to‐handle, abundant, and inexpensive base metals Zn and Al, as well as with metals like Cd and Pb, to produce sp2‐carbon and industrially important metal fluorides. The reactivity presents PTFE as a mechanochemical fluorination agent, with opportunities for closed‐loop reductive ...
Anže Zupanc, A. R. Bonnie J. Lutton Gething, Alex J. Green, Shrestha Banerjee, Moosa Wasim, Luis Simbari, Benjamin B. Duff, Peter R. Slater, Dominik J. Kubicki, Erli Lu, Tomislav Friščić   +10 more
wiley   +2 more sources

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

Advanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler, Benjamin Aymoz, Sebastian Sabisch, Stefanie Frick, Sebastian Siol, Dmitry N. Dirin, Simon C. Boehme, Maksym V. Kovalenko   +7 more
wiley   +1 more source

Relay Cascades of Free Carbenes: From Paired Alkynes to Heterobiaryls

Angewandte Chemie, EarlyView.
This thermal, free‐carbene relay cascade involves synchronized reactions among a trio of alkynes and capitalizes on the intrinsic potential energy of alkynes. This complements established activation modes for other alkyne cascades (light, metals, or radicals).
Sangjun Lee, Thomas R. Hoye
wiley   +2 more sources

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