Results 71 to 80 of about 34,105 (267)

(S)-(-)-Limonene Derivatives Containing (1H-1,2,3-Triazol-4-yl)methyl 4-Bromobenzoate

Molbank, 2011
The synthesis of (S)-(-)-limonene derivatives containing (1H-1,2,3-triazol-4-yl)methyl 4-bromobenzoate were obtained by epoxidation, azidolysis and Huisgen’s 1,3-dipolar cycloaddition.
Guillermo Valdomir, Danilo Davyt
doaj   +1 more source

Copper(I)-Phosphinite Complexes in Click Cycloadditions: Three-Component Reactions and Preparation of 5-Iodotriazoles [PDF]

, 2016
© 2016 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.The remarkable activity displayed by copper(I)–phosphinite complexes of general formula [CuBr(L)] in two challenging cycloadditions is reported: a) the one-pot azidonation/cycloaddition of
Crosbie, P, Diez-Gonzalez, S, Lal, S, Perez, J   +3 more
core   +3 more sources

1,2‐Diazetidines − Structure, Synthesis, and Functionalization

European Journal of Organic Chemistry, EarlyView.
1,2‐Diazetidines are saturated four‐membered heterocycles featuring two adjacent nitrogen atoms. Despite recent advances in their synthesis and promising potential in medicinal chemistry, the chemistry of these cyclic hydrazines remains underexplored.
Stefan Roesner
wiley   +1 more source

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, EarlyView.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Synthesis with Perfect Atom Economy: Generation of Furan Derivatives by 1,3-Dipolar Cycloaddition of Acetylenedicarboxylates at Cyclooctynes

Molecules, 2014
Cyclooctyne and cycloocten-5-yne undergo, at room temperature, a 1,3-dipolar cycloaddition with dialkyl acetylenedicarboxylates 1a,b to generate furan-derived short-lived intermediates 2, which can be trapped by two additional equivalents of 1a,b or ...
Klaus Banert, Sandra Bochmann, Andreas Ihle, Oliver Plefka, Florian Taubert, Tina Walther, Marcus Korb, Tobias Rüffer, Heinrich Lang   +8 more
doaj   +1 more source

Synthesis of enantiomeric polyhydroxyalkylpyrrolidines from 1,3-dipolar cycloadducts. Evaluation as inhibitors of a β-galactofuranosidase [PDF]

, 2016
Enantiomeric 2,3,4-tris(hydroxyalkyl)-5-phenylpyrrolidines have been synthesized from the major cycloadducts obtained by the 1,3-dipolar cycloaddition of sugar enones with azomethine ylides derived from natural amino acids.
Oliveira Udry, Guillermo Alejandro, Repetto, Evangelina, Varela, Oscar Jose, Vega, Daniel Roberto   +3 more
core   +2 more sources

Structure and Spectroscopy of Criegee Intermediates in Gas‐ and Aqueous Environments

Helvetica Chimica Acta, EarlyView.
ABSTRACT The dynamics and spectroscopy of the small (H2COO) and large (CH3CHOO) Criegee intermediates (CIs) in the gas phase, inside/on water droplets, on amorphous solid water (ASW) and in bulk water are investigated using validated energy functions.
Cangtao Yin, Meenu Upadhyay, Markus Meuwly   +2 more
wiley   +1 more source

A Convenient, Safe, and Atom‐Economical Route to a Large Portfolio of Grubbs‐Type Catalysts for Olefin Metathesis via Four‐Coordinate Ruthenium Alkylidynes

Angewandte Chemie, Volume 138, Issue 16, 13 April 2026.
It may seem counterintuitive to first target a ruthenium alkylidyne when Grubbs‐type ruthenium carbene complexes are the actual goal. In the end, however, this tactic pays valuable dividends in terms of practicality, atom economy, flexibility as well as safety: the new route provides ready access to a large assortment of catalysts for alkene metathesis
Mingxu Cui, Alois Fürstner
wiley   +2 more sources

5-Benzoyl-N,4-diphenyl-4,5-dihydro-1H-pyrazole-3-carboxamide

Acta Crystallographica Section E, 2009
The title compound, C23H19N3O2, was synthesized by the 1,3-dipolar cycloaddition reaction of N-phenyl-α-diazoacetamide and chalcone. In the molecule, the pyrazoline ring assumes an envelope conformation.
Long He
doaj   +1 more source

Ruthenium-catalyzed azide alkyne cycloaddition reaction: scope, mechanism and applications [PDF]

, 2016
The ruthenium-catalyzed azide alkyne cycloaddition (RuAAC) affords 1,5-disubstituted 1,2,3-triazoles in one step and complements the more established copper-catalyzed reaction providing the 1,4-isomer.
Akimova G., Akimova G., Akimova G., Anna Said Stålsmeden, Bader R. F. W., Chandrasekaran S., Das R., Fan W.-Q., Fokin V. V., Gruchlik A., Huisgen R., Johan R. Johansson, Keicher T., Levin J. I., Murahashi S.-I., Neumajer G., Nina Kann, Palaniraja J., Parsons J. G., Schilling C., Tamás Beke-Somfai, Trabocchi A., Yubo J., Zhou Y. B.   +23 more
core   +2 more sources