Results 121 to 130 of about 4,461 (274)

1,3-Dipolar cycloadditions of 2-thio-3-chloroacrylamides with nitrile oxides and nitrones

, 2010
1,3-Dipolar cycloadditions of 2-thio-3-chloroacrylamides with nitrile oxides and nitrones is described. A series of novel isoxazolines are isolated from the nitrile oxide cycloadditions, whilst the isoxazolines generated from the nitrone cycloadditions ...
Lawrence, Simon E., Kissane, Marie, Maguire, Anita R.   +2 more
core   +1 more source

A Comprehensive Study of the Synthesis, Spectral Characteristics, Quantum–Chemical Molecular Electron Density Theory, and In Silico Future Perspective of Novel CBr₃-Functionalyzed Nitro-2-Isoxazolines Obtained via (3 + 2) Cycloaddition of (E)-3,3,3-Tribromo-1-Nitroprop-1-ene

Molecules
The search for new heterocyclic compounds with biological potential is one of the current challenges in modern chemistry. Therefore, the comprehensive study of (3 + 2) cycloaddition (32CA) reactions between a series of aryl-substituted nitrile N-oxides ...
Karolina Zawadzińska-Wrochniak, Karolina Kula, Mar Ríos-Gutiérrez, Bartłomiej Gostyński, Tomasz Krawczyk, Radomir Jasiński   +5 more
doaj   +1 more source

Intramolecular 1,3-dipolar cycloadditions of norbornadiene-tethered nitrile oxides

, 2000
Although the intermolecular reactions of 1,3-dipoles with norbornadiene and its derivatives have been subjected to considerable investigation, the intramolecular variants have not been studied.
Yip, Carol
core  

1,3-Dipolar cycloadditions of acridine with nitrile oxides

ARKIVOC, 2002
Antonino Corsaro, Venerando Pistarà, Antonio Rescifina, Giovanni Romeo, Roberto Romeo, Ugo Chiacchio   +5 more
doaj   +1 more source

1,3-Dipoles: Nitrile Imines, Nitrile Oxides and Nitrile Sulfides [PDF]

Synlett, 2012
openaire   +1 more source

Design, synthesis, and reactivity study of (3-(4-bromophenyl)isoxazole-5-yl)methanol with isobutyric acid

Discover Chemistry
Background Isoxazole derivatives are a pivotal class of heterocyclic compounds with extensive applications in medicinal chemistry, agrochemicals, and materials science.
Mahsa Fatollahzadeh Dizaji, Ramin Ghasemishayan, Ladan Edjlali   +2 more
doaj   +1 more source

An improved synthesis of 1,2-benzisoxazoles: TBAF mediated 1,3-dipolar cycloaddition of nitrile oxides and benzyne

, 2012
An efficient synthesis of a range of 1,2-benzisoxazoles using an improved 1,3-dipolar cycloaddition of nitrile oxides and benzyne is described. Key to the procedure is the in situ generation of the reactive nitrile oxide and benzyne reaction partners ...
Steve Keeling (2278165), Pallavi Sharma (17167069), Christian Spiteri (2202430), Fengzhi Zhang (335439), Simon J. F. Macdonald (7411652), John E. Moses (2020789)   +5 more
core   +1 more source

Unlocking Catalyst Activation as a Critical Bottleneck in Cross‐Coupling Reactions: Room‐Temperature Couplings of Weak Nucleophiles Enabled by [Pd(1‐MeNAP)TFA]2 Precatalysts

Angewandte Chemie International Edition, EarlyView.
In many Pd‐catalyzed cross‐couplings, catalyst performance has been found to be limited by catalyst activation. Methylnaphthyl (MeNAP) palladium trifluoroacetate dimers are presented as easy‐to‐store and easy‐to‐handle precursors, which rapidly activate under reaction conditions, even when only weakly coordinating, non‐reducing nucleophiles are present.
Sourav Manna, Henric F. Janning, Nikolaos V. Tzouras, Jane Anto Simplica Sagayaraj, Fadil Faizal Mannighayil, Angelino Doppiu, Lukas J. Gooßen   +6 more
wiley   +1 more source

Catalytic Enantioselective [3 + 2] Cycloaddition of α-Keto Ester Enolates and Nitrile Oxides. [PDF]

J Am Chem Soc, 2017
Bartlett SL, Sohtome Y, Hashizume D, White PS, Sawamura M, Johnson JS, Sodeoka M.   +6 more
europepmc   +1 more source

ADDITION OF NITRILE OXIDES TO SILYL- AND GERMYL-DISUBSTITUTED ETHYLENES

Main Group Metal Chemistry, 1999
Lukevics, E., Arsenyan, P., Fleisher, M., Popelis, J., Pudova, O.   +4 more
doaj   +1 more source