Concerted [4 + 2] and Stepwise (2 + 2) Cycloadditions of Tetrafluoroethylene with Butadiene: DFT and DLPNO-UCCSD(T) Explorations. [PDF]
, 2020 Tetrafluoroethylene and butadiene form the 2 + 2 cycloadduct under kinetic control, but the Diels-Alder cycloadduct is formed under thermodynamic control. Borden and Getty showed that the preference for 2 + 2 cycloaddition is due to the necessity for syn-
Houk, KN +4 more
core
Catalysis of a 1,3-dipolar reaction by distorted DNA incorporating a heterobimetallic platinum(II) and copper(II) complex [PDF]
, 2017 A novel catalytic system based on covalently modified DNA is described. This catalyst promotes 1,3-dipolar reactions between azomethine ylides and maleimides.
Aboudzadeh, Ali +9 more
core +2 more sources
Triazole-oligomers by 1,3-dipolar cycloaddition [PDF]
Arkivoc, 2006 A variety of triazole-oligomers have been prepared under microwave and conventional conditions from novel alkynes and azides.
Rong Jiang +8 more
openaire +2 more sources
Cyclooctyne-based reagents for uncatalyzed click chemistry: A computational survey [PDF]
, 2009 With the goal of identifying alkyne-like reagents for use in click chemistry, but without Cu catalysts, we used B3LYP density function theory (DFT) to investigate the trends in activation barriers for the 1,3-dipolar cycloadditions of azides with various
Chenoweth, David +2 more
core +1 more source
Coumarin–Tetrapyrrolic Macrocycle Conjugates: Synthesis and Applications
Molecules, 2017 This review covers the synthesis of coumarin–porphyrin, coumarin–phthalocyanine and coumarin–corrole conjugates and their potential applications. While coumarin–phthalocyanine conjugates were obtained almost exclusively by tetramerization of coumarin ...
Ana F. R. Cerqueira +3 more
doaj +1 more source
Molecules, 2023 Multicomponent reactions (MCRs) have undoubtedly emerged as the most indispensable tool for organic chemists worldwide, finding extensive utility in the synthesis of intricate natural products, heterocyclic molecules with significant bioactivity, and ...
Hua Zhao, Yufen Zhao
doaj +1 more source
Asymmetric 1,3-Dipolar Cycloadditons of Stabilized Azomethine Ylides with Nitroalkenes [PDF]
, 2014 This review highlights the biological importance of many polysubstituted nitro-prolines and -pyrrolidines. Their preparation using asymmetric 1,3-dipolar cycloadditions of azomethine ylides with nitroalkenes using diastereoselective and enantioselective ...
Nájera, Carmen, Sansano, Jose M.
core +2 more sources
Copper Nanoparticles in Click Chemistry [PDF]
, 2015 Conspectus: The challenges of the 21st century demand scientific and technological achievements that must be developed under sustainable and environmentally benign practices.
Alonso, Francisco +2 more
core +2 more sources
Recent Advances in Isatin–Thiazole Hybrids: Synthesis, Structural Design, and Biological Application
Chemistry &Biodiversity, EarlyView.ABSTRACT Isatin–thiazole hybrids are considered privileged chemical scaffolds due to their broad spectrum of pharmacological properties, making them attractive candidates for drug development. As a result, isatin–thiazole derivatives have emerged as a prominent class of hybrid heterocycles and have been the focus of extensive research in recent years ...
Isadora M. G. Andrade +4 more
wiley +1 more source
1,3-Dipolar cycloaddition of diazomethane with a chiral azlactone
Tetrahedron Letters, 1994 AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Cativiela, Carlos +3 more
openaire +4 more sources