Results 81 to 90 of about 938,190 (242)

Enamide−Olefin Ring-Closing Metathesis

, 2016
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 ...
Jan H. van Maarseveen (1489900), Floris P. J. T. Rutjes (1450666), Sape S. Kinderman (2355052), Henk Hiemstra (1387788), Hans E. Schoemaker (2418688)   +4 more
core   +1 more source

Synthesis of 2H-Chromenes via Hydrazine-Catalyzed Ring-Closing Carbonyl-Olefin Metathesis [PDF]

, 2019
The catalytic ring-closing carbonyl-olefin metathesis (RCCOM) of O-allylsalicylaldehydes to form 2H-chromenes is described. The method utilizes a [2.2.1]-bicyclic hydrazine catalyst and operates via a [3+2]/retro-[3+2] metathesis manifold. The nature of
Tristan, Lambert, Yunfei, Zhang, Janis, Jermaks, Samantha N., Macmillan   +3 more
core   +1 more source

Catalytic Enantioselective Ring-Closing Metathesis by a Chiral Biphen−Mo Complex

, 2016
Catalytic Enantioselective Ring-Closing Metathesis by a Chiral Biphen−Mo ...
John B. Alexander (2988690), Richard R. Schrock (1295601), Amir H. Hoveyda (1306548), Dustin R. Cefalo (2983722), Daniel S. La (2025589)   +4 more
core   +2 more sources

Synthesis of indole-based propellane derivatives via Weiss–Cook condensation, Fischer indole cyclization, and ring-closing metathesis as key steps

Beilstein Journal of Organic Chemistry, 2013
A variety of highly functionalized indole-based [n.3.3]propellane derivatives is described. The synthesis of the propellane derivatives involves a Weiss–Cook condensation, a Fischer indole cyclization, and a ring-closing metathesis as key steps.
Sambasivarao Kotha, Ajay Kumar Chinnam, Arti Tiwari   +2 more
doaj   +1 more source

Rapid, two-pot procedure for the synthesis of dihydropyridinones; total synthesis of aza-goniothalamin

Beilstein Journal of Organic Chemistry, 2020
A fast, protecting-group-free synthesis of dihydropyridinones has been developed. Starting from commercially available aldehydes, a novel one-pot amidoallylation gave access to diene compounds in good yields.
Thomas J. Cogswell, Craig S. Donald, Rodolfo Marquez   +2 more
doaj   +1 more source

A short stereoselective synthesis of (+)-(6R,2′S)-cryptocaryalactone via ring-closing metathesis

Beilstein Journal of Organic Chemistry, 2009
A short stereoselective synthesis of (+)-(6R,2′S)-cryptocaryalactone was successfully completed. Key steps included the application of Carreira’s asymmetric alkynylation reaction to form a propargylic alcohol and subsequently lactone formation using the ...
Palakodety Radha Krishna, Krishnarao Lopinti, K. L. N. Reddy   +2 more
doaj   +1 more source

Synthesis of cyclic proline-containing peptides via ring-closing metathesis

, 2003
Several dienes embedded in di- and tripeptides which incorporate proline have been prepared and subjected to ring-closing metathesis. Bicyclic peptides of well-defined amide geometry and of varying ring sizes were prepared.
Brimble, MA, Margaret A. Brimble, Peter D. Gluckman, Paul W. R. Harris, Harris, PWR, Gluckman, PD   +5 more
core   +1 more source

Activation of Metal Complexes With Ultrasound Waves for Targeted Anticancer Therapy

Angewandte Chemie International Edition, EarlyView.
Ultrasound enables non‐invasive activation of metal‐based therapeutics deep within tumors. Acoustic cavitation can drive sonodynamic reactive oxygen species generation or mechanochemical metal–ligand bond dissociation, enabling controlled release of bioactive payloads.
Félix Grosjean, Nicolás Montesdeoca, Gilles Berger, Johannes Karges   +3 more
wiley   +1 more source

Design principles for vitrimers: Linking dynamic covalent chemistry, network architecture, and engineering performance

Bulletin of the Korean Chemical Society, EarlyView.
This review examines vitrimer performance from a broader perspective, considering not only dynamic covalent chemistry but also molecular structure, network architecture, and rheological behavior. These factors are discussed in relation to service and processing windows, reprocessing, repair, and engineering applications, providing a multiscale ...
Kyosun Ku, Hyeonuk Yeo
wiley   +1 more source

Molybdenum‐carbothioamide complexes as potential single‐source precursors for MoS2 thin film

Bulletin of the Korean Chemical Society, EarlyView.
Novel molybdenum complexes were synthesized to apply for deposition of Mo‐containing thin films. All complexes were characterized, and they are likely to be used as single‐source precursors for MoS2 thin films. Abstract Molybdenum disulfide (MoS2) thin films are widely used in batteries, transistors, supercapacitors, and 2D materials owing to their ...
Sung Kwang Lee, Dagyum Yoo, Tae Wook Kim, Taek‐Mo Chung   +3 more
wiley   +1 more source