Results 91 to 100 of about 3,577 (190)

A Novel Cycloaddition Reaction of Thermally Generated Sulfenes

CHIMIA, 1992
The highly strained ?-sultine 4, resulting from the addition of SO2 to benzobenzvalene, is shown to undergo a thermal cycloreversion which gives 1H-indene-1-thiocarbaldehyde dioxide (6) as an intermediate and subsequently 1H-indene-1 ...
Ulrich Burger, Serge P. Schmidlin, Jiri Mareda, Gerald Bernardinelli   +3 more
doaj   +2 more sources

Acceleration of 1,3-Dipolar Cycloadditions by Integration of Strain and Electronic Tuning. [PDF]

J Am Chem Soc, 2021
Dones JM, Abularrage NS, Khanal N, Gold B, Raines RT.   +4 more
europepmc   +1 more source

An overview of the cycloaddition chemistry of fulvenes and emerging applications

Beilstein Journal of Organic Chemistry, 2019
The unusual electronic properties and unique reactivity of fulvenes have interested researchers for over a century. The propensity to form dipolar structures at relatively low temperatures and to participate as various components in cycloaddition ...
Ellen Swan, Kirsten Platts, Anton Blencowe   +2 more
doaj   +1 more source

Regio- and Diastereoselective 1,3-Dipolar Cycloadditions of 1,2,4-Triazin-1-ium Ylides: a Straightforward Synthetic Route to Polysubstituted Pyrrolo[2,1-f][1,2,4]triazines. [PDF]

ACS Omega, 2022
Galeta J, Šlachtová V, Dračínský M, Vrabel M.   +3 more
europepmc   +1 more source

Nitropyridines as 2π-Partners in 1,3-Dipolar Cycloadditions with N-Methyl Azomethine Ylide: An Easy Access to Condensed Pyrrolines. [PDF]

Molecules, 2021
Bastrakov MA, Fedorenko AK, Starosotnikov AM, Shakhnes AK.   +3 more
europepmc   +1 more source

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

Electrocyclic Ring‐Opening of 1,2,4‐Oxadiazole[4,5‐a]piridinium Chloride: a New Route to 1,2,4‐Oxadiazole Dienamino Compounds

ChemistryOpen, 2019
1,2,4‐Oxadiazole[4,5‐a]piridinium chloride adds nucleophiles to undergo electrocyclic ring opening affording 1,2,4‐oxadiazole dienamino derivatives. These pyridinium salts represent a special class of Zincke salts that are prone to rearrange when treated
Dr. Stefano Carella, Dr. Misal Giuseppe Memeo, Prof. Paolo Quadrelli   +2 more
doaj   +1 more source

Synthesis of chiral-at-metal rhodium complexes from achiral tripodal tetradentate ligands: resolution and application to enantioselective Diels-Alder and 1,3-dipolar cycloadditions. [PDF]

RSC Adv, 2022
Tejero AG, Carmona M, Rodríguez R, Viguri F, Lahoz FJ, García-Orduña P, Carmona D.   +6 more
europepmc   +1 more source

Cycloadditions in modern polymer chemistry

, 2015
ConspectusSynthetic polymer chemistry has undergone two major developments in the last two decades. About 20 years ago, reversible-deactivation radical polymerization processes started to give access to a wide range of polymeric architectures made from ...
Guimard, N. K., Delaittre, G., Barner-Kowollik, C.   +2 more
core   +1 more source

Quantitative Dynamics of the N₂O + C₂H₂ → Oxadiazole Reaction: A Model for 1,3-Dipolar Cycloadditions. [PDF]

ACS Omega, 2020
Liu Y, Li J.
europepmc   +1 more source