Sustainable Catalytic Process with a High Eco-Scale Score for the Synthesis of Five-, Six-, and Seven-Membered Heterocyclic Compounds Using Nanocrystalline Zeolites
Sign Up to like & getrecommendations! Published in 2017 at "Asian Journal of Organic Chemistry"
DOI: 10.1002/ajoc.201700120
Abstract: Nanocrystalline ZSM-5 and Beta zeolites were evaluated as catalysts for the one-pot synthesis of a wide range of five-, six-, and seven-membered heterocyclic compounds. Seven-membered compounds were prepared by the reaction of o-phenylenediamine and ketones,… read more here.
Keywords: heterocyclic compounds; reaction; seven membered; membered compounds ... See more keywords
Multicomponent Reactions of Arylglyoxal, 4-Hydroxycoumarin, and Cyclic 1,3-C,N-Binucleophiles: Binucleophile Directed Synthesis of Fused Five and Six Membered N-Heterocycles
Sign Up to like & getrecommendations! Published in 2017 at "European Journal of Organic Chemistry"
DOI: 10.1002/ejoc.201700115
Abstract: The multicomponent reaction (MCR) of arylglyoxal, 4-hydroxycoumarin, and various cyclic 1,3-C,N-binucleophiles in acetic acid under microwave conditions provides fused five- or six- membered N-heterocycles depending on the ring size of the binucleophiles. 1,3-C,N-binucleophiles, such as… read more here.
Keywords: six membered; cyclic binucleophiles; membered heterocycles; fused five ... See more keywords
Bioinformatics analyses and in vitro evidence for five and six stacked G-quadruplex forming sequences.
Sign Up to like & getrecommendations! Published in 2018 at "Biochimie"
DOI: 10.1016/j.biochi.2018.05.002
Abstract: Quadruplexes are noncanonical DNA structures that arise in guanine rich loci and have important biological functions. Classically, quadruplexes contain four stacked intramolecular G-tetrads. Surprisingly, although some algorithms allow searching for longer than 4G tracts for… read more here.
Keywords: six stacked; bioinformatics analyses; evidence; intramolecular tetrads ... See more keywords
Synthesis of original polycycles containing five-, six- and seven-membered rings through cyclocarbopalladations/C–H activation cascade reactions
Sign Up to like & getrecommendations! Published in 2017 at "Comptes Rendus Chimie"
DOI: 10.1016/j.crci.2017.01.005
Abstract: Abstract Different types of starting materials have been designed and their ability to undergo cascade reactions has been investigated. New polycycles containing five-, six-, and seven-membered rings are described via original cascade reactions. The process… read more here.
Keywords: cascade reactions; polycycles containing; containing five; seven membered ... See more keywords
Asymmetric one-pot synthesis of five- and six-membered lactones via dynamic covalent kinetic resolution: Exploring the regio- and stereoselectivities of lipase
Sign Up to like & getrecommendations! Published in 2019 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2019.02.030
Abstract: Abstract Cascade lipase-catalyzed lactonization has been applied to dynamic hemithioacetal formation, leading to efficient five- and six-membered lactone synthesis as well as chiral discrimination. Solvent-dependent regioselectivity was observed for the selective formation of 1,3-oxathiolan-5-one and… read more here.
Keywords: five six; six membered; pot synthesis; one pot ... See more keywords
Trickier than It Looks: Isomerization between Five- and Six-Coordinated Zinc in Heterometallic Li2Zn2 Molecule
Sign Up to like & getrecommendations! Published in 2024 at "Inorganic Chemistry"
DOI: 10.1021/acs.inorgchem.4c00634
Abstract: This report describes the synthesis and characterization of two heterobimetallic Li–Zn coordination isomers [Li2Zn2(tbaoac)6] (tbaoac = tert-butyl acetoacetato) that have been isolated separately by the same stoichiometric reaction run in different organic solvents. The 6-coordinated… read more here.
Keywords: six coordinated; isomerization five; looks isomerization; trickier looks ... See more keywords
Protodemetalation of (Bipyridyl)Ni(II)-Aryl Complexes Shows Evidence for Five-, Six-, and Seven-Membered Cyclic Pathways.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.3c00618
Abstract: Protonation of C-M bonds and its microscopic reverse, metalation of C-H bonds, are fundamental steps in a variety of metal-catalyzed processes. As such, studies on protonation of C-M bonds can shed light on C-H activation.… read more here.
Keywords: transition state; five six; seven membered; transition ... See more keywords
Novel high reactive bifunctional five- and six-membered bicyclic dicarbonate – synthesis and characterisation
Sign Up to like & getrecommendations! Published in 2018 at "RSC Advances"
DOI: 10.1039/c8ra00669e
Abstract: Five- and six-membered bicyclic carbonates are valuable raw materials for the synthesis of environmentally friendly polymers, such as polycarbonates or non-isocyanate poly(hydroxyurethane)s. However, bicyclic diglycerol dicarbonates bearing five-membered and six-membered rings have been never reported… read more here.
Keywords: novel high; dicarbonate; six membered; synthesis ... See more keywords
Perspectives of ionic liquids applications for the synthesis of five- and six-membered O,N-heterocycles
Sign Up to like & getrecommendations! Published in 2018 at "Synthetic Communications"
DOI: 10.1080/00397911.2017.1406521
Abstract: ABSTRACT A considerable attention has been paid on the use of ionic liquids in chemical research. Modern synthetic chemistry is benefited as ionic liquid methodology provided an environmentally benign approach. In comparison to traditional processes… read more here.
Keywords: perspectives ionic; six membered; synthesis five; membered heterocycles ... See more keywords
Photochemical reactions in five and six-membered polyheterocycles synthesis
Sign Up to like & getrecommendations! Published in 2019 at "Synthetic Communications"
DOI: 10.1080/00397911.2019.1622732
Abstract: Abstract Heterocycles are present in the drugs and pesticides in a major proportion and development of new strategies for the synthesis of these compounds is attractive topic for the synthetic and medicinal chemists. Synthesis of… read more here.
Keywords: six membered; photochemical reactions; reactions five; polyheterocycles synthesis ... See more keywords
First-principles theory of five- and six-phonon scattering
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review B"
DOI: 10.1103/zxcz-5q9w
Abstract: Higher-order phonon scatterings beyond fourth order remain largely unexplored despite their potential importance in strongly anharmonic materials at elevated temperatures. We develop a theoretical formalism for first-principles calculation of five- and six-phonon scatterings using Green's… read more here.
Keywords: phonon; first principles; six phonon; five six ... See more keywords