SuFExable NH-Pyrazoles via 1,3-Dipolar Cycloadditions of Diazo Compounds with Bromoethenylsulfonyl Fluoride. [PDF]
J Org Chem, 2022 Yamanushkin P +3 more
europepmc +1 more source
Hydrazones as Singular Reagents in Asymmetric Organocatalysis [PDF]
, 2016 This Minireview summarizes strategies and developments regarding the use of hydrazones as reagents in asymmetric organocatalysis, their distinct roles in nucleophile–electrophile, cycloaddition, and cyclization reactions.
Fernández Fernández, Rosario Fátima +4 more
core +1 more source
Base-induced Generation of Aryl(1,2,3-triazol-1-yl)carbenes from 1-[(N-Phenylsulfonyl)benzohydrazonoyl]-1,2,3-triazoles and Their Ring Enlargement to 3-Aryl-1,2,4-triazines [PDF]
, 2005 The Bamford-Stevens reactions of 1-[N-(phenylsulfonyl)benzohydrazonoyl]-1,2,3-triazole derivatives, readily available from the 1,3-dipolar cycloadditions of N-(phenylsulfonyl)benzohydrazonoyl azides with enamines, were examined and the transformation ...
Akikazu Kakehi +3 more
core +2 more sources
Acceleration of 1,3-Dipolar Cycloadditions by Integration of Strain and Electronic Tuning. [PDF]
J Am Chem Soc, 2021 Dones JM +4 more
europepmc +1 more source
Stability of different phases of (C60)2 Structures [PDF]
arXiv, 2006 We investigate the possible binding configurations of pairs of C60 molecules when pushed against each other. Tersoff potential, which represents intramolecular interactions well, has been used to calculate potential energies. We begin relaxation of atomic coordinates at various distances of separation and for all possible mutual orientations of the two
arxiv
Syntheses of Isoxazoline-Based Amino Acids by Cycloaddition of Nitrile Oxides and Their Conversion into Highly Functionalized Bioactive Amino Acid Derivatives [PDF]
, 2012 The present account illustrates the syntheses of isoxazoline- based amino acids by the cycloaddition of 1,3-dipolar nitrile oxides to the C–C double bond of unsaturated amino acid derivatives, with focus on the regio- and stereoselectivities of the ...
Fülöp, Ferenc +2 more
core
Synthesis of pyrazoline derivatives from the 1,3-dipolar cycloadditions using α,β-unsaturated cyclohexanone derivatives [PDF]
, 2013 A series of 2-pyrazolines (3a-d) were obtained by reaction 1,3-dipolar cycloadditions of α,β-unsaturated cyclohexanone derivatives (2a-c) with hydrazine hydrate and 4-nitrophenylhydrazine in the presence of acetic acid and ethanol as solvents.
Fieser +11 more
core +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 +3 more
europepmc +1 more source
Acyl Imidazole : A Promising Template for Asymmetric Lewis and Brønsted Acid Mediated 1,3-Dipolar Cycloadditions [PDF]
, 2011 Construction of chiral complex molecules continues to be a challenge for organic chemists all over the world and to address this challenge numerous methodologies have been developed.
Rane, Digamber Sadanand
core
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 +3 more
europepmc +1 more source