Results 31 to 40 of about 66,029 (249)

Aza-Diels-Alder reaction of both electron-deficient azoalkenes with electron-deficient 3-phencaylideneoxindoles and 3-aryliminooxindol-2-ones

open access: yesGreen Synthesis and Catalysis, 2021
An uncommon aza-Diels-Alder reaction of electron-deficient azoalkenes and electron-deficient 3-phenacylideneoxindoles was successfully developed for convenient construction of the heterocyclic spirooxindoles.
Wenjing Shi, Jing Sun, Chao-Guo Yan
doaj   +1 more source

One-pot multi-reaction processes: synthesis of natural products and drug-like scaffolds [PDF]

open access: yes, 2014
One-pot multi-reaction processes involving Overman rearrangements, metathesis cyclizations, and Diels–Alder reactions have been developed for the rapid and efficient synthesis of amino-substituted carbocyclic and heterocyclic compounds.
Calder, Ewen D.D.   +2 more
core   +1 more source

Diels–Alder Cycloaddition Reactions in Sustainable Media

open access: yesMolecules, 2022
Diels–Alder cycloaddition reaction is one of the most powerful strategies for the construction of six-membered carbocyclic and heterocyclic systems, in most cases with high regio- and stereoselectivity.
Maria I. L. Soares   +2 more
doaj   +1 more source

A miniaturised 3D printed polypropylene reactor for online reaction analysis by mass spectrometry [PDF]

open access: yes, 2017
Correction: Reaction Chemistry & Engineering, vol. 2:5, p. 811 DOI: 81110.1039/C7RE90018JA miniaturised polypropylene reactor was fabricated by 3D printing using fused deposition modeling.
Boije af Gennäs, Gustav   +6 more
core   +1 more source

Thermodynamic and Kinetic Study of Diels–Alder Reaction between Furfuryl Alcohol and N-Hydroxymaleimides—An Assessment for Materials Application

open access: yesMolecules, 2020
The study of Diels−Alder reactions in materials science is of increasing interest. The main reason for that is the potential thermoreversibility of the reaction.
Jamerson Carneiro de Oliveira   +2 more
doaj   +1 more source

Hetero-Diels–Alder reactions of hetaryl and aryl thioketones with acetylenic dienophiles [PDF]

open access: yes, 2015
Selected hetaryl and aryl thioketones react with acetylenecarboxylates under thermal conditions in the presence of LiClO4 or, alternatively, under high-pressure conditions (5 kbar) at room temperature yielding thiopyran derivatives.
Grzelak, Paulina   +4 more
core   +4 more sources

A solvent-free Diels-Alder reaction of graphite into functionalized graphene nanosheets [PDF]

open access: yes, 2014
A solvent-free Diels-Alder reaction was carried out by heating a mixture of graphite and a typical dienophile, maleic anhydride (MA) or maleimide (MI), in a sealed glass ampoule of argon.
Baek, Jong-Beom, Seo, Jeong-Min
core   +1 more source

Applications of the Conceptual Density Functional Theory Indices to Organic Chemistry Reactivity [PDF]

open access: yes, 2016
Indexación: Web of ScienceTheoretical reactivity indices based on the conceptual Density Functional Theory (DFT) have become a powerful tool for the semiquantitative study of organic reactivity.
Domingo, Luis R.   +2 more
core   +2 more sources

Oxidative [4+2] annulation of styrenes with alkynes under external-oxidant-free conditions

open access: yesNature Communications, 2018
A sequence of a Diels–Alder reaction and oxidation is a powerful route to valuable aromatic compounds. Here, the authors report a more atom-economical oxidant-free strategy involving a Diels–Alder with H2 evolution under noble-metal-free photoredox ...
Guoting Zhang   +5 more
doaj   +1 more source

Triazolinediones as highly enabling synthetic tools [PDF]

open access: yes, 2016
Triazolinediones (TADs) are unique reagents in organic synthesis that have also found wide applications in different research disciplines, in spite of their somewhat "exotic" reputation.
Billiet, Stijn   +5 more
core   +1 more source

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