Results 91 to 100 of about 99,145 (214)

1,3-Dipolar cycloaddition reactions of carbonyl ylides with 1,2-diones: synthesis of novel spiro oxabicycles

, 2002
1,3-Dipolar cycloaddition reaction of carbonyl ylides with various o-quinones afforded highly oxygenated spiro ...
Sheela, K. C., Rath, Nigam P., Nair, Vijay, Dhanya, R., Sethumadhavan, D.   +4 more
core   +1 more source

The Reactivity of Addends in the 1,3-Dipolar Cycloaddition Reaction [PDF]

, 1984
The influence of donor-acceptor interactions and localisation energies on the reactivity of addends in the 1,3-dipolar cycloaddition reaction is examined.
Samuilov Y., Konovalov A.
core  

1,3-Dipolar Cycloaddition of Furfuryl Nitrones with Acrylates. A Convenient Approach to Protected 4-Hydroxypyroglutamic Acids

, 2016
1,3-Dipolar Cycloaddition of Furfuryl Nitrones with Acrylates.
Tomas Tejero (2539816), Pedro Merino (203869), Santiago Franco (1456816), Sonia Anoro (3049023), Victoria Tuñon (3049020), Francisco L. Merchan (3025284)   +5 more
core   +1 more source

Ambimodal Dipolar/Diels–Alder Cycloaddition Transition States Involving Proton Transfers

, 2018
Quantum mechanical computations and molecular dynamics simulations have been used to elucidate the factors that control reaction outcomes in ambi­modal transition states leading to both dipolar and Diels–Alder cycloaddition products, which can ...
K. N. Houk, K. N. Houk (1247004), Shuming Chen (1590061), Shuming Chen, Peiyuan Yu (1499551), Peiyuan Yu   +5 more
core   +1 more source

Synthesis of new triazole-based trifluoromethyl scaffolds

Beilstein Journal of Organic Chemistry, 2008
Trifluoromethyl propargylamines react with various azide derivatives to afford 1,4-disubstituted 1,2,3-triazoles through a Huisgen 1,3-dipolar cycloaddition. The reaction is catalyzed by a Cu(I) species in acetonitrile, and the corresponding products are
Michela Martinelli, Thierry Milcent, Sandrine Ongeri, Benoit Crousse   +3 more
doaj   +1 more source

The Reactivity of Addends in the 1,3-Dipolar Cycloaddition Reaction

, 2020
The influence of donor-acceptor interactions and localisation energies on the reactivity of addends in the 1,3-dipolar cycloaddition reaction is examined.
Samuilov Y., Konovalov A.
core  

Cyaphide-Azide 1,3-Dipolar Cycloaddition Reactions: Scope and Applicability. [PDF]

Chemistry, 2023
Yang ES, Mapp A, Taylor A, Beer PD, Goicoechea JM.   +4 more
europepmc   +1 more source

Synthesis of Different Heterocyclic Compounds of Pharmaceutical Relevance [PDF]

This thesis describes the synthesis of different cyclic imines and the exploration of their reactivity with cyclopropenones and 1,3-dipoles,as well as an investigation of the chemistry of the products.
Khan, Musharraf Naveed
core   +1 more source

Inverting the Regioselectivity of 1,3-Dipolar Cycloaddition Reaction Between Nitrones and Enal Derivatives

Reactions
The 1,3-dipolar cycloaddition of nitrones with hydrazones affords 5-iminoisoxazolidines as the major products, in contrast to the reaction with enals, which exclusively afford 4-acylisoxazolidines.
Yuki Maeda, Yoshimitsu Hashimoto, Yuriko Oshita, Sayuri Yuhara, Osamu Tamura, Nobuyoshi Morita   +5 more
doaj   +1 more source

Decarboxylative 1,3-dipolar cycloaddition of amino acids for the synthesis of heterocyclic compounds. [PDF]

Beilstein J Org Chem, 2023
Zhang X, Ma X, Zhang W.
europepmc   +1 more source