Results 31 to 40 of about 216,387 (290)
Molecules, 2023 The synthesis of dicyclic spiropyridazine oxoindole derivatives by using [3+3]-cycloaddition of N-unsubstituted isatin N,N′-cyclic azomethine imine 1,3-dipoles was reported.
Guosheng Yang +9 more
doaj +1 more source
Crystal structure of the 4 + 2 cycloadduct of photooxidized anthracene and C60 fullerene
Acta Crystallographica Section E, 2014 The structure of the title compound, 5,6-[(1R,10S)-2,9-dioxatricyclo[8.6.03,8.011,16]hexadecane-1,10-diyl]-(C60–Ih)[5,6]fullerene methanedithione 0.1-solvate, C74H10O2·0.1CS2, has tetragonal (P42/n) symmetry at 100 K. It has a unique eight-membered ring,
Gábor Bortel +3 more
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Overview of 1,5-Selective Click Reaction of Azides with Alkynes or Their Synthetic Equivalents
Molecules, 2023 Nowadays, the click reaction of azides with alkynes has evolved rapidly and become one of the most efficient methods to synthesize 1,2,3-triazoles, which are an important class of N-containing heterocycles.
Yaqi Zhao +3 more
doaj +1 more source
[2 + 2]-Cycloaddition of a stabilised vinyl cation with cyclopentadiene; X-ray crystal structure of the 2 : 1 addition product [PDF]
, 1981 Lewis acid-catalysed reaction of 1,1-dimethyl-3-phenylprop-2-ynyl chloride with cyclopentadiene yields a 2 : 1 addition product via[2 + 2]-cycloaddition of an intermediate allenyl ...
Kaliba, Claus +2 more
core +1 more source
Chemical Society Reviews, 2010 Copper-catalyzed azide-alkyne cycloaddition (CuAAC) is a widely utilized, reliable, and straightforward way for making covalent connections between building blocks containing various functional groups.
J. Hein, V. Fokin
semanticscholar +1 more source
Molecules, 2023 An innovative and efficient approach has been developed for the synthesis of 5,6-dihydropyrazolo[5,1-a]isoquinolines. This one-pot tandem reaction involves the reaction of C,N-cyclic azomethine imines with α,β-unsaturated ketones, using K2CO3 as the base
Young Jae Yun, Sung-Gon Kim
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Discovery of new mutually orthogonal bioorthogonal cycloaddition pairs through computational screening. [PDF]
, 2015 Density functional theory (DFT) calculations and experiments in tandem led to discoveries of new reactivities and selectivities involving bioorthogonal sydnone cycloadditions.
Houk, KN +3 more
core +1 more source
Molecules, 2000 Ab initio and DFT quantum chemical calculations have been applied to a study of the Diels-Alder reaction of o-benzoquinone as diene and norbornadiene as dienophile.
Ronald N. Warrener +2 more
doaj +1 more source
Synthesis of 4-Arylselanyl-1H-1,2,3-triazoles from Selenium-Containing Carbinols
Molecules, 2021 In this work, we present a simple way to achieve 4-arylselanyl-1H-1,2,3-triazoles from selenium-containing carbinols in a one-pot strategy. The selenium-containing carbinols were used as starting materials to produce a range of selanyl-triazoles in ...
Francesca Begini +6 more
doaj +1 more source
Stereodivergent, Diels-Alder-initiated organocascades employing α,β-unsaturated acylammonium salts: scope, mechanism, and application. [PDF]
, 2017 Chiral α,β-unsaturated acylammonium salts are novel dienophiles enabling enantioselective Diels-Alder-lactonization (DAL) organocascades leading to cis- and trans-fused, bicyclic γ- and δ-lactones from readily prepared dienes, commodity acid chlorides ...
Abbasov, Mikail E +3 more
core +2 more sources