Results 11 to 20 of about 81,193 (228)

Thermally Induced Intramolecular Diels–Alder Reaction of Furan-Tethered Methylenecyclopropanes [PDF]

open access: yesMolecules
The substantial ring strain and activated double bonds render methylenecyclopropanes (MCPs) potential substrates for Diels–Alder (DA) reactions. In this work, we present a thermally induced intramolecular Diels–Alder (IMDA) reaction utilizing furan ...
Qi-Yun Huang   +3 more
doaj   +2 more sources

DIELS-ALDER ADDITION OF BENZYNE TO N-SUBSTITUTED 2-PYRIDONES.

open access: yes, 1971
DIELS-ALDER ADDITION OF BENZYNE TO N-SUBSTITUTED 2 ...
ERIC BENJAMIN. SHEININ (7996424)
core   +5 more sources

Computational study on the catalytic control of endo/exo Diels-Alder reactions by cavity quantum vacuum fluctuations, https://github.com/fabijan5/qed-diels-alder

open access: yes, 2023
Computational study on the catalytic control of endo/exo Diels-Alder reactions by cavity quantum vacuum ...
Angel Rubio   +2 more
core   +1 more source

Inter- and intramolecular Diels-Alder/retro-Diels-Alder reactions of 4-silylated oxazoles [PDF]

open access: yes, 2002
4-Silylated oxazoles have been shown to undergo inter- and intramolecular Diels-Alder/retro-Diels-Alder reactions with electron-poor alkynes to generate polysubstituted furans.
Marsden, S.P., Ducept, P.C.
core   +5 more sources

Intramolecular Imino Diels-Alder Reaction: Progress toward the Synthesis of Uncialamycin [PDF]

open access: yes, 2009
We herein described an intramolecular imino Diels-Alder reaction promoted with BF3.OEt2/DDQ affording substituted quinolines. Using this procedure, we prepared the chiral quitioline moiety of the uncialamycin, a new enediyne natural ...
Pierre van de Weghe   +5 more
core   +1 more source

Masked Bisketenes as Diels–Alder Dienes [PDF]

open access: yes, 2020
2,5-Bis(tert-butyldimethylsilyloxy)furans are established as masked vicinal bisketenes for application as dienes in the Diels–Alder reaction.
Emma, Becroft   +4 more
core   +2 more sources

Exo-selective intermolecular Diels–Alder reaction by PyrI4 and AbnU on non-natural substrates

open access: yesCommunications Chemistry, 2021
Diels-Alderases remain rare in nature, particularly those catalysing intermolecular reactions. Here two natural Diels-Alderases are shown to catalyse exo-selective intermolecular Diels-Alder reactions on non-natural substrates.
Rajnandani Kashyap   +8 more
doaj   +1 more source

Diaza-1,3-butadienes as Useful Intermediate in Heterocycles Synthesis

open access: yesMolecules, 2022
Many heterocyclic compounds can be synthetized using diaza-1,3-butadienes (DADs) as key structural precursors. Isolated and in situ diaza-1,3-butadienes, produced from their respective precursors (typically imines and hydrazones) under a variety of ...
Jorge Heredia-Moya   +3 more
doaj   +1 more source

Screening of chiral Diels-Alder catalysts by mass spectrometric monitoring of the retro reaction [PDF]

open access: yes, 2007
A rapid screening procedure for the identification of chiral Diels-Alder catalysts by ESI MS was developed. Screening of the retro reaction made it possible to indirectly determine the catalyst’s enantioselectivity for the forward, product-forming ...
Teichert, Antje Maria
core   +1 more source

Highly Regio-, Enantio-, and Exo-selective Diels–Alder Reactions Enabled by a Bispyrrolidine Diboronate [PDF]

open access: yes, 2021
Catalytic asymmetric Diels−Alder reaction is one of the most powerful reactions in organic chemistry. It is still a challenge to achieve high and general exo-selectivity.
Jia-Hua, Chen   +6 more
core   +2 more sources

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