Results 101 to 110 of about 17,231 (260)

Synthesis of a sucrose-based macrocycle with unsymmetrical monosaccharides "arms"

Beilstein Journal of Organic Chemistry, 2018
An efficient methodology for the selective substitution of both terminal positions (C6 and C6’) in 1’,2,3,3’,4,4’-hexa-O-benzylsucrose with different unsaturated monosaccharide units is presented.
Karolina Tiara, Mykhaylo A. Potopnyk, Sławomir Jarosz   +2 more
doaj   +1 more source

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Synthesis and Structures of Fused N-Heterocylic Carbenes and Their Rhodium Complexes [PDF]

, 2010
New procedures for the synthesis of N-heterocyclic carbenes with multiple fused rings have been developed utilizing a key ring-closing metathesis step. Rhodium complexes were obtained via the pentafluorophenyl carbene adducts.
Grubbs, Robert H., Li, Jean, Stewart, Ian C.   +2 more
core   +2 more sources

Synthesis of Enantiopure Oxygen- and Nitrogen-Containing Heterocycles by Diastereoselective Ring-Closing Metathesis Reaction in Perhydro-1,3-benzoxazine Derivatives [PDF]

, 2019
Producción CientíficaDiastereoselective ring‐closing metathesis reactions on chiral trienic perhydro‐1,3‐benzoxazines derived from (−)‐8‐aminomenthol featuring two diastereotopic olefin chains is described.
Andrés Juan, Celia, Gutiérrez Loriente, Agustín, Martín Álvarez, José Miguel, Nieto Román, Francisco Javier, Prieto, Elena   +4 more
core   +2 more sources

Distinct Ligand‐ and Metal‐Centered Phosphorescence in a Terbium Carbazolyl Complex

Chemistry – A European Journal, EarlyView.
Terbium and lanthanum carbazolide complexes show two distinct modes of luminescence: Strongly temperature‐dependent narrow‐line terbium emission could be induced. In addition, both the terbium and the lanthanum complexes show broad‐line interligand emission processes with excited states of microsecond life‐time.
Xiaofei Sun, Frederic Krätschmer, Julia Feye, Marcel Lukanowski, Dominik Graf, Sergei Lebedkin, Manfred Kappes, Florian Weigend, Peter W. Roesky, Alexander Hinz   +9 more
wiley   +1 more source

Development of a Method for the Preparation of Ruthenium Indenylidene-Ether Olefin Metathesis Catalysts

Molecules, 2012
The reactions between several derivatives of 1-(3,5-dimethoxyphenyl)-prop-2-yn-1-ol and different ruthenium starting materials [<em>i.e.</em>, RuCl₂(PPh₃)₃ and RuCl<sub ...
Yann Schrodi, Benjamin J. Gallon, Daniel R. Tolentino, Leonel R. Jimenez   +3 more
doaj   +1 more source

Rapid assembly of highly-functionalised difluorinated cyclooctenones via ring-closing metathesis [PDF]

, 2002
Building block methodology from trifluoroethanol and ringclosing metathesis using a Fürstner modification of Grubbs’ conditions allows the rapid synthesis of novel difluorinated ...
Kariuki, Benson M., Owton, W. Martin, Percy, Jonathan, Pintat, Stephane, Smith, Clive A., Spencer, Neil S, Thomas, Andrew C, Watson, Martin   +7 more
core   +1 more source

Regio‐ and Diastereoselective C–C Silylation of Cyclopropyl Acetates Harnessing Fluorinated Poly(pyridyl)Borate Rhodium Catalysts

Chemistry – A European Journal, EarlyView.
Fluorinated poly(pyridyl)borates have been utilized to stabilize rhodium‐diene complexes and as supporting ligands in rhodium‐catalyzed redox‐neutral C–C silylation of cyclopropyl acetates, producing silicon‐containing heterocyclic products, dioxasilolanes.
Vo Quang Huy Phan, Suman Das Adhikary, Junha Jeon, H. V. Rasika Dias   +3 more
wiley   +1 more source

Biodegradable Grubbs-Loaded Artificial Organelles for Endosomal Ring-Closing Metathesis. [PDF]

Biomacromolecules, 2023
Oerlemans RAJF, Shao J, van Stevendaal MHME, Wu H, Patiño Padial T, Abdelmohsen LKEA, van Hest JCM.   +6 more
europepmc   +1 more source

The Synthesis of cis- and trans-Fused Bicyclic Sugar Amino Acids [PDF]

, 2006
Four isomeric bicyclic sugar amino acids (SAAs) were prepared from an α-acetylenic-C-glucoside by employing a Petasis olefination and a ring-closing metathesis (RCM) as key steps.
Anelli, Billing, Bornaghi, Chakraborty, Chakraborty, Chakraborty, Chatterjee, Cipolla, Coste, Dondoni, Durrat, Edwards, Fleet, Gregar, Grotenbreg, Halcomb, La Ferla, Leeuwenburgh, Leeuwenburgh, Locardi, Locardi, Mayes, Menand, Miller, Montero, Moss, Murray, Peri, Petasis, Raunkjaer, Schwab, Schweizer, Stöckle, Tanaka, Timmer, Trnka, Truffault, van Well   +37 more
core   +2 more sources